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Healthcare
8 min read
Areas of Expertise :
Trademarks, Consumer Survey, Linguistics, Intellectual Property, Marketing, Advertising, Unfair Competition, Statistics
Published Date:
Last Modified Date:
Jurisdiction:
Federal. Tenth Circuit
Water Pik, Inc. v. Med-Systems, Inc., 726 F.3d 1136 (10th Cir. 2013), arose from a trademark dispute between two manufacturers of nasal irrigation products. Med-Systems, Inc., which owned the registered SinuCleanse trademarks, alleged that Water Pik's competing SinuSense brand was likely to confuse consumers about the source or affiliation of the products. On May 26, 2010, Water Pik filed a declaratory judgment action in the U.S. District Court for the District of Colorado, in Denver, seeking confirmation that its use of SinuSense did not infringe Med-Systems' trademark rights. Med-Systems responded with counterclaims involving trademark infringement, trade dress infringement, unfair competition, trademark dilution, and related allegations. The litigation involved conflicting consumer confusion surveys, linguistic analysis, and disagreements over whether the competing trademarks were sufficiently similar to mislead purchasers.
On January 25, 2012, the district court granted summary judgment in Water Pik's favor on Med-Systems' remaining counterclaims. Although the court dismissed Water Pik's declaratory judgment claims as moot, it expressly stated that Water Pik had the right to register and use the SinuSense mark. The U.S. Court of Appeals for the Tenth Circuit affirmed the judgment on August 12, 2013, concluding that Med-Systems had not presented sufficient evidence of likely consumer confusion. The appellate decision examined the reliability of consumer survey evidence, the commercial strength of the SinuCleanse trademarks, and differences between the competing marks. The related opposition before the Trademark Trial and Appeal Board (TTAB) was dismissed with prejudice on October 2, 2013.
Med-Systems, Inc. was founded in 1997 by Dr. Diane Heatley and David Gallo to develop and sell nasal irrigation products, including neti pots, squeeze bottles, and saline refill packets. The company obtained federal registration for its stylized SinuCleanse trademark in 1998, followed by registrations for the SINUCLEANSE and SINUCLEANSE SQUEEZE word marks in 2008. Its products were sold through pharmacies and national retail chains across the United States. By the time of the litigation, all three registrations had attained incontestable status under federal trademark law, and Med-Systems relied on those rights in challenging Water Pik's competing brand.
Water Pik, Inc., a manufacturer of oral irrigators and showerheads, began exploring opportunities in the nasal irrigation market in 2008. The company initially considered acquiring Med-Systems and its SinuCleanse product line, but negotiations ended without an agreement on December 10, 2008. Water Pik then pursued its own nasal irrigation products, consulting outside marketing firms about packaging, product design, and potential trademarks. After evaluating its branding options, the company selected SinuSense for the new product line.
On May 28, 2009, Water Pik filed an intent-to-use application with the United States Patent and Trademark Office (USPTO) to register the SINUSENSE word mark. The application was published for opposition on October 13, 2009. Med-Systems challenged the proposed registration on December 10, 2009, initiating Opposition No. 91192964 before the TTAB. The opposition alleged that Water Pik's proposed trademark conflicted with Med-Systems' registered SinuCleanse marks for nasal irrigation products.
Med-Systems filed a trademark lawsuit against Water Pik in the U.S. District Court for the Western District of Wisconsin on March 8, 2010, but voluntarily dismissed it without prejudice before serving the complaint. On May 26, 2010, Water Pik initiated a declaratory judgment action in the District of Colorado, seeking rulings on trademark infringement, trade dress infringement, unfair competition, dilution, and its right to register and use SINUSENSE. Med-Systems responded with counterclaims under the Lanham Act and allegations of tortious interference with contractual and existing economic relationships involving a national retailer. Med-Systems subsequently dismissed the two interference counterclaims with prejudice, while the remaining claims proceeded through litigation. The TTAB suspended its opposition on June 14, 2010, pending the federal proceedings, and Water Pik began selling SinuSense products in July.
The parties submitted expert evidence addressing whether consumers were likely to associate SinuSense products with the SinuCleanse brand. Water Pik retained Dr. Gary T. Ford, who conducted a mall-intercept survey involving 164 respondents at 16 shopping malls across the United States. Only one participant, approximately 0.6% of those surveyed, indicated an association between the competing brands. Med-Systems disputed the reliability of Ford's findings, challenging his respondent selection, sampling procedures, and survey questions. It sought to exclude his opinions on the grounds that the survey did not reliably measure consumer confusion.
U.S. District Judge Philip A. Brimmer denied Med-Systems' motion to exclude Dr. Ford's consumer confusion survey evidence. Med-Systems argued that the survey population did not adequately represent relevant purchasers and questioned Ford's sampling methods, including his use of demographic information from a separate market research report. Judge Brimmer examined the challenged procedures and determined that the alleged methodological weaknesses did not warrant excluding Ford's opinions. The decision allowed Water Pik to retain the survey evidence, leaving questions about its reliability and evidentiary weight to be considered separately.
On January 25, 2012, Judge Brimmer granted summary judgment for Water Pik on Med-Systems' remaining counterclaims. The court found insufficient evidence of likely consumer confusion to sustain the trademark infringement and unfair competition claims. It also rejected the trade dress infringement claim because Med-Systems had not established inherent distinctiveness or acquired secondary meaning, while the trademark dilution claim failed for lack of sufficient evidence of fame. Although Water Pik's declaratory judgment claims were dismissed as moot, the court expressly ordered that Water Pik had the right to register and use the SinuSense mark. Final judgment was entered on January 26, 2012, and the jury trial scheduled for February 6 was canceled.
On February 1, 2012, Med-Systems moved for reconsideration under Federal Rule of Civil Procedure 59(e), relying partly on additional expert evidence to challenge the trademark infringement ruling. Dr. Michael A. Belch had prepared an internet-based survey involving 401 respondents to examine perceived relationships among the SinuCleanse, SinuSense, and NeilMed brands, while Dr. David M. Yerkes, an English professor at Columbia University, analyzed the trademarks' appearance, pronunciation, and meaning. The district court identified substantial problems with Belch's methods, including an overly broad respondent population, unrepresentative sampling, product presentations that differed from ordinary marketplace conditions, and suggestive questions. The court also considered Yerkes' linguistic analysis but found the evidence insufficient to justify changing its earlier decision. On June 13, 2012, Judge Brimmer denied the motion for reconsideration.
The U.S. Court of Appeals for the Tenth Circuit affirmed summary judgment in Water Pik's favor on August 12, 2013, after reviewing Med-Systems' trademark infringement and unfair competition arguments. Applying its six-factor likelihood-of-confusion framework, the court examined the competing marks, the parties' commercial activities, and the consumer survey evidence submitted by Med-Systems. After accounting for responses involving the NeilMed control brand, the court calculated a net confusion rate below 6.5% for the saline-packet comparison and approximately negative 0.5% for the neti-pot comparison. The judges also found differences in the trademarks' appearance, pronunciation, and meaning, together with insufficient evidence of substantial commercial strength or meaningful actual confusion. Concluding that Med-Systems had not established a genuine factual dispute concerning likely consumer confusion, the court affirmed the judgment without relying on Dr. Ford's survey results.
Following the appellate ruling, Water Pik and Med-Systems submitted a joint stipulated motion to the TTAB on September 4, 2013. They requested that the suspended opposition involving Water Pik's SINUSENSE application be resumed and dismissed with prejudice. The filing followed the federal courts' resolution of the infringement and unfair competition claims and sought to terminate the remaining administrative dispute over the proposed trademark registration.
On October 2, 2013, the TTAB dismissed Med-Systems' opposition to Water Pik's SINUSENSE trademark application with prejudice. The dismissal followed the parties' September 4 stipulated request and resolved the administrative challenge to the proposed registration. The USPTO recorded Opposition No. 91192964 as terminated on the same date, closing the trademark opposition proceeding associated with the federal litigation.
Court:
United States Court of Appeals for the Tenth Circuit
Case Name:
Water Pik, Inc. v. Med-Systems, Inc.
Water Pik, Inc. filed a declaratory judgment action against Med-Systems, Inc. on May 26, 2010, in the U.S. District Court for the District of Colorado, seeking a ruling that its SinuSense trademark did not infringe Med-Systems' registered SinuCleanse trademarks.
The central dispute concerned whether the competing nasal irrigation brands created a likelihood of consumer confusion regarding product source, sponsorship, or affiliation.
Both parties presented expert evidence on consumer confusion. Dr. Michael A. Belch conducted a survey for Med-Systems, Dr. Gary T. Ford conducted a survey for Water Pik, and Dr. David M. Yerkes provided a linguistic analysis of the trademarks.
On January 25, 2012, the district court granted summary judgment for Water Pik on Med-Systems' remaining counterclaims. The Tenth Circuit affirmed on August 12, 2013, finding insufficient evidence of likely consumer confusion and identifying methodological problems in Med-Systems' survey.
On October 2, 2013, the Trademark Trial and Appeal Board dismissed Med-Systems' opposition to Water Pik's SINUSENSE trademark application with prejudice, concluding the related administrative proceeding.
Trademark Infringement
Likelihood Of Confusion
Trade Dress
Brand Dilution
Branding
Market Research
Advertising and Marketing
Water Pik, Inc. v. Med-Systems, Inc., 726 F.3d 1136 (10th Cir. 2013), arose from a trademark dispute between two manufacturers of nasal irrigation products. Med-Systems, Inc., which owned the registered SinuCleanse trademarks, alleged that Water Pik's competing SinuSense brand was likely to confuse consumers about the source or affiliation of the products. On May 26, 2010, Water Pik filed a declaratory judgment action in the U.S. District Court for the District of Colorado, in Denver, seeking confirmation that its use of SinuSense did not infringe Med-Systems' trademark rights. Med-Systems responded with counterclaims involving trademark infringement, trade dress infringement, unfair competition, trademark dilution, and related allegations. The litigation involved conflicting consumer confusion surveys, linguistic analysis, and disagreements over whether the competing trademarks were sufficiently similar to mislead purchasers.
On January 25, 2012, the district court granted summary judgment in Water Pik's favor on Med-Systems' remaining counterclaims. Although the court dismissed Water Pik's declaratory judgment claims as moot, it expressly stated that Water Pik had the right to register and use the SinuSense mark. The U.S. Court of Appeals for the Tenth Circuit affirmed the judgment on August 12, 2013, concluding that Med-Systems had not presented sufficient evidence of likely consumer confusion. The appellate decision examined the reliability of consumer survey evidence, the commercial strength of the SinuCleanse trademarks, and differences between the competing marks. The related opposition before the Trademark Trial and Appeal Board (TTAB) was dismissed with prejudice on October 2, 2013.
Med-Systems, Inc. was founded in 1997 by Dr. Diane Heatley and David Gallo to develop and sell nasal irrigation products, including neti pots, squeeze bottles, and saline refill packets. The company obtained federal registration for its stylized SinuCleanse trademark in 1998, followed by registrations for the SINUCLEANSE and SINUCLEANSE SQUEEZE word marks in 2008. Its products were sold through pharmacies and national retail chains across the United States. By the time of the litigation, all three registrations had attained incontestable status under federal trademark law, and Med-Systems relied on those rights in challenging Water Pik's competing brand.
Water Pik, Inc., a manufacturer of oral irrigators and showerheads, began exploring opportunities in the nasal irrigation market in 2008. The company initially considered acquiring Med-Systems and its SinuCleanse product line, but negotiations ended without an agreement on December 10, 2008. Water Pik then pursued its own nasal irrigation products, consulting outside marketing firms about packaging, product design, and potential trademarks. After evaluating its branding options, the company selected SinuSense for the new product line.
On May 28, 2009, Water Pik filed an intent-to-use application with the United States Patent and Trademark Office (USPTO) to register the SINUSENSE word mark. The application was published for opposition on October 13, 2009. Med-Systems challenged the proposed registration on December 10, 2009, initiating Opposition No. 91192964 before the TTAB. The opposition alleged that Water Pik's proposed trademark conflicted with Med-Systems' registered SinuCleanse marks for nasal irrigation products.
Med-Systems filed a trademark lawsuit against Water Pik in the U.S. District Court for the Western District of Wisconsin on March 8, 2010, but voluntarily dismissed it without prejudice before serving the complaint. On May 26, 2010, Water Pik initiated a declaratory judgment action in the District of Colorado, seeking rulings on trademark infringement, trade dress infringement, unfair competition, dilution, and its right to register and use SINUSENSE. Med-Systems responded with counterclaims under the Lanham Act and allegations of tortious interference with contractual and existing economic relationships involving a national retailer. Med-Systems subsequently dismissed the two interference counterclaims with prejudice, while the remaining claims proceeded through litigation. The TTAB suspended its opposition on June 14, 2010, pending the federal proceedings, and Water Pik began selling SinuSense products in July.
The parties submitted expert evidence addressing whether consumers were likely to associate SinuSense products with the SinuCleanse brand. Water Pik retained Dr. Gary T. Ford, who conducted a mall-intercept survey involving 164 respondents at 16 shopping malls across the United States. Only one participant, approximately 0.6% of those surveyed, indicated an association between the competing brands. Med-Systems disputed the reliability of Ford's findings, challenging his respondent selection, sampling procedures, and survey questions. It sought to exclude his opinions on the grounds that the survey did not reliably measure consumer confusion.
U.S. District Judge Philip A. Brimmer denied Med-Systems' motion to exclude Dr. Ford's consumer confusion survey evidence. Med-Systems argued that the survey population did not adequately represent relevant purchasers and questioned Ford's sampling methods, including his use of demographic information from a separate market research report. Judge Brimmer examined the challenged procedures and determined that the alleged methodological weaknesses did not warrant excluding Ford's opinions. The decision allowed Water Pik to retain the survey evidence, leaving questions about its reliability and evidentiary weight to be considered separately.
On January 25, 2012, Judge Brimmer granted summary judgment for Water Pik on Med-Systems' remaining counterclaims. The court found insufficient evidence of likely consumer confusion to sustain the trademark infringement and unfair competition claims. It also rejected the trade dress infringement claim because Med-Systems had not established inherent distinctiveness or acquired secondary meaning, while the trademark dilution claim failed for lack of sufficient evidence of fame. Although Water Pik's declaratory judgment claims were dismissed as moot, the court expressly ordered that Water Pik had the right to register and use the SinuSense mark. Final judgment was entered on January 26, 2012, and the jury trial scheduled for February 6 was canceled.
On February 1, 2012, Med-Systems moved for reconsideration under Federal Rule of Civil Procedure 59(e), relying partly on additional expert evidence to challenge the trademark infringement ruling. Dr. Michael A. Belch had prepared an internet-based survey involving 401 respondents to examine perceived relationships among the SinuCleanse, SinuSense, and NeilMed brands, while Dr. David M. Yerkes, an English professor at Columbia University, analyzed the trademarks' appearance, pronunciation, and meaning. The district court identified substantial problems with Belch's methods, including an overly broad respondent population, unrepresentative sampling, product presentations that differed from ordinary marketplace conditions, and suggestive questions. The court also considered Yerkes' linguistic analysis but found the evidence insufficient to justify changing its earlier decision. On June 13, 2012, Judge Brimmer denied the motion for reconsideration.
The U.S. Court of Appeals for the Tenth Circuit affirmed summary judgment in Water Pik's favor on August 12, 2013, after reviewing Med-Systems' trademark infringement and unfair competition arguments. Applying its six-factor likelihood-of-confusion framework, the court examined the competing marks, the parties' commercial activities, and the consumer survey evidence submitted by Med-Systems. After accounting for responses involving the NeilMed control brand, the court calculated a net confusion rate below 6.5% for the saline-packet comparison and approximately negative 0.5% for the neti-pot comparison. The judges also found differences in the trademarks' appearance, pronunciation, and meaning, together with insufficient evidence of substantial commercial strength or meaningful actual confusion. Concluding that Med-Systems had not established a genuine factual dispute concerning likely consumer confusion, the court affirmed the judgment without relying on Dr. Ford's survey results.
Following the appellate ruling, Water Pik and Med-Systems submitted a joint stipulated motion to the TTAB on September 4, 2013. They requested that the suspended opposition involving Water Pik's SINUSENSE application be resumed and dismissed with prejudice. The filing followed the federal courts' resolution of the infringement and unfair competition claims and sought to terminate the remaining administrative dispute over the proposed trademark registration.
On October 2, 2013, the TTAB dismissed Med-Systems' opposition to Water Pik's SINUSENSE trademark application with prejudice. The dismissal followed the parties' September 4 stipulated request and resolved the administrative challenge to the proposed registration. The USPTO recorded Opposition No. 91192964 as terminated on the same date, closing the trademark opposition proceeding associated with the federal litigation.
Trademark Survey Expert Witness - Dr. Michael A. Belch - Defense
Dr. Michael A. Belch prepared an internet-based consumer survey for Med-Systems to examine whether purchasers associated SinuCleanse and SinuSense with the same company or affiliated businesses. His survey involved 401 respondents, but the district court and Tenth Circuit identified deficiencies in sampling, respondent selection, trademark presentation, question wording, and confusion-rate calculations. These weaknesses substantially limited the survey's ability to establish likely consumer confusion.
Consumer Survey Expert Witness - Dr. Gary T. Ford - Plaintiff
Dr. Gary T. Ford was retained by Water Pik, the plaintiff in the declaratory judgment action and defendant to Med-Systems' counterclaims. He conducted a mall-intercept survey at 16 shopping malls involving 164 respondents, of whom approximately 0.6% indicated an association between SinuSense and SinuCleanse. The district court permitted his testimony despite methodological objections, although the Tenth Circuit ultimately affirmed summary judgment without relying on his survey findings.
Linguistics Expert Witness - Dr. David M. Yerkes - Defense
Dr. David M. Yerkes, an English professor at Columbia University, evaluated similarities between the SinuCleanse and SinuSense trademarks in their written appearance, pronunciation, and meaning. His analysis supported Med-Systems' position that the marks could be confused, but the Tenth Circuit concluded that assessing these similarities did not require specialized expert assistance. His opinions did not establish a genuine factual dispute sufficient to prevent summary judgment.
Intellectual Property Expert Witness
An intellectual property expert witness may analyze trademark ownership, brand distinctiveness, marketplace use, and potential infringement in disputes involving competing products or services. Such experts can review trademark registration records, branding practices, product positioning, and consumer confusion evidence to assess disputed intellectual property claims.
Likelihood of Consumer Confusion Under the Lanham Act
Trademark infringement under the Lanham Act generally requires evidence that consumers are likely to misunderstand the source, sponsorship, or affiliation of competing products. In Water Pik v. Med-Systems, the Tenth Circuit applied six nonexclusive factors: actual confusion, the alleged infringer's intent, similarity of the marks, consumer purchasing care, similarities in products and marketing channels, and trademark strength. Although the companies sold similar products through overlapping channels, the court concluded that the combined evidence did not establish likely consumer confusion.
Consumer Survey Sampling and Relevant Purchasers
Consumer confusion surveys are generally designed to reflect the perceptions of people who are likely to purchase the products at issue. Dr. Belch's survey drew from general sinus-remedy consumers rather than adequately targeting prospective nasal irrigation purchasers, and only 148 of its 401 respondents had previously used nasal-wash products. The district court also questioned the demographic adjustments and sampling decisions, finding that these limitations weakened the survey's reliability.
Trademark Presentation and Marketplace Conditions
The way trademarks appear in a survey can affect whether respondents perceive a relationship between competing products. The Tenth Circuit criticized Questions 3 and 10 of Belch's survey for displaying the marks in plain text without their customary stylization or Water Pik's accompanying house mark. Other questions used product packaging but relied on side-by-side comparisons that did not adequately reproduce ordinary retail conditions, leaving uncertainty about whether the responses reflected actual purchasing circumstances.
Net Confusion Rates and Consumer Survey Calculations
Net confusion rates estimate consumer confusion after accounting for responses attributable to unrelated factors, often through a control brand or product. The Tenth Circuit determined that Belch's reported 36% confusion figure should have been approximately 3.9%, based on eight net confused respondents among all 203 participants in the relevant survey group rather than only those who identified a perceived brand relationship. In separate product comparisons, the court calculated net confusion below 6.5% for saline packets and approximately negative 0.5% for neti pots, with the negative figure reflecting a higher response rate for the control brand after adjustment.
Trademark Strength and Consumer Brand Recognition
Trademark strength encompasses both a mark's inherent distinctiveness and the extent to which consumers recognize it as identifying a particular commercial source. The Tenth Circuit characterized SinuCleanse as descriptive and found insufficient evidence of substantial commercial strength despite Med-Systems' incontestable federal trademark registrations. The registrations remained valid, but their incontestable status did not independently establish that consumers were likely to confuse SinuCleanse with SinuSense.
The dispute between Water Pik and Med-Systems was resolved through summary judgment rather than a jury trial, following judicial examination of trademark similarity, brand recognition, and consumer survey evidence. Med-Systems relied on its registered SinuCleanse trademarks and expert opinions to challenge Water Pik's competing brand, but the courts found that its evidence did not establish a genuine factual dispute concerning likely consumer confusion. In particular, the Tenth Circuit's review of the survey calculations and marketplace comparisons left the asserted consumer associations unsupported by sufficiently reliable evidence.
The appellate judgment left Water Pik's favorable ruling intact, and the parties subsequently terminated the related TTAB opposition. The case concluded with the October 2, 2013 dismissal of that proceeding with prejudice, following the federal courts' rejection of Med-Systems' remaining counterclaims.
What was the main issue in Water Pik, Inc. v. Med-Systems, Inc.?
The central issue was whether Water Pik's SinuSense trademark created a likelihood of consumer confusion with Med-Systems' registered SinuCleanse trademarks. Med-Systems alleged that purchasers could mistakenly believe the competing nasal irrigation products came from the same company or affiliated businesses.
Why did the court find Med-Systems' consumer confusion survey unreliable?
The courts identified problems with Dr. Belch's respondent selection, sampling methods, suggestive questions, and product presentations that did not adequately reflect ordinary marketplace conditions. The Tenth Circuit also found errors in the confusion-rate calculations, leaving the survey insufficient to establish a genuine factual dispute concerning likely confusion.
Which expert witnesses were involved in the Water Pik trademark case?
Dr. Michael A. Belch and Dr. Gary T. Ford provided consumer confusion survey evidence, while Dr. David M. Yerkes submitted a linguistic analysis of the competing trademarks. Belch and Yerkes supported Med-Systems' infringement position, while Ford was retained by Water Pik.
Does a registered trademark guarantee success in an infringement lawsuit?
No. Federal trademark registration provides legal protections, but a party alleging infringement must still prove the required elements of its claim, including likelihood of consumer confusion. Med-Systems held incontestable trademark registrations, yet the courts concluded that the evidence did not support allowing its infringement claims to proceed to trial.
What was the final ruling in Water Pik, Inc. v. Med-Systems, Inc.?
Trademark Survey Expert Witness - Dr. Michael A. Belch - Defense
Dr. Michael A. Belch prepared an internet-based consumer survey for Med-Systems to examine whether purchasers associated SinuCleanse and SinuSense with the same company or affiliated businesses. His survey involved 401 respondents, but the district court and Tenth Circuit identified deficiencies in sampling, respondent selection, trademark presentation, question wording, and confusion-rate calculations. These weaknesses substantially limited the survey's ability to establish likely consumer confusion.
Consumer Survey Expert Witness - Dr. Gary T. Ford - Plaintiff
Dr. Gary T. Ford was retained by Water Pik, the plaintiff in the declaratory judgment action and defendant to Med-Systems' counterclaims. He conducted a mall-intercept survey at 16 shopping malls involving 164 respondents, of whom approximately 0.6% indicated an association between SinuSense and SinuCleanse. The district court permitted his testimony despite methodological objections, although the Tenth Circuit ultimately affirmed summary judgment without relying on his survey findings.
Linguistics Expert Witness - Dr. David M. Yerkes - Defense
Dr. David M. Yerkes, an English professor at Columbia University, evaluated similarities between the SinuCleanse and SinuSense trademarks in their written appearance, pronunciation, and meaning. His analysis supported Med-Systems' position that the marks could be confused, but the Tenth Circuit concluded that assessing these similarities did not require specialized expert assistance. His opinions did not establish a genuine factual dispute sufficient to prevent summary judgment.
Intellectual Property Expert Witness
An intellectual property expert witness may analyze trademark ownership, brand distinctiveness, marketplace use, and potential infringement in disputes involving competing products or services. Such experts can review trademark registration records, branding practices, product positioning, and consumer confusion evidence to assess disputed intellectual property claims.
Likelihood of Consumer Confusion Under the Lanham Act
Trademark infringement under the Lanham Act generally requires evidence that consumers are likely to misunderstand the source, sponsorship, or affiliation of competing products. In Water Pik v. Med-Systems, the Tenth Circuit applied six nonexclusive factors: actual confusion, the alleged infringer's intent, similarity of the marks, consumer purchasing care, similarities in products and marketing channels, and trademark strength. Although the companies sold similar products through overlapping channels, the court concluded that the combined evidence did not establish likely consumer confusion.
Consumer Survey Sampling and Relevant Purchasers
Consumer confusion surveys are generally designed to reflect the perceptions of people who are likely to purchase the products at issue. Dr. Belch's survey drew from general sinus-remedy consumers rather than adequately targeting prospective nasal irrigation purchasers, and only 148 of its 401 respondents had previously used nasal-wash products. The district court also questioned the demographic adjustments and sampling decisions, finding that these limitations weakened the survey's reliability.
Trademark Presentation and Marketplace Conditions
The way trademarks appear in a survey can affect whether respondents perceive a relationship between competing products. The Tenth Circuit criticized Questions 3 and 10 of Belch's survey for displaying the marks in plain text without their customary stylization or Water Pik's accompanying house mark. Other questions used product packaging but relied on side-by-side comparisons that did not adequately reproduce ordinary retail conditions, leaving uncertainty about whether the responses reflected actual purchasing circumstances.
Net Confusion Rates and Consumer Survey Calculations
Net confusion rates estimate consumer confusion after accounting for responses attributable to unrelated factors, often through a control brand or product. The Tenth Circuit determined that Belch's reported 36% confusion figure should have been approximately 3.9%, based on eight net confused respondents among all 203 participants in the relevant survey group rather than only those who identified a perceived brand relationship. In separate product comparisons, the court calculated net confusion below 6.5% for saline packets and approximately negative 0.5% for neti pots, with the negative figure reflecting a higher response rate for the control brand after adjustment.
Trademark Strength and Consumer Brand Recognition
Trademark strength encompasses both a mark's inherent distinctiveness and the extent to which consumers recognize it as identifying a particular commercial source. The Tenth Circuit characterized SinuCleanse as descriptive and found insufficient evidence of substantial commercial strength despite Med-Systems' incontestable federal trademark registrations. The registrations remained valid, but their incontestable status did not independently establish that consumers were likely to confuse SinuCleanse with SinuSense.
The dispute between Water Pik and Med-Systems was resolved through summary judgment rather than a jury trial, following judicial examination of trademark similarity, brand recognition, and consumer survey evidence. Med-Systems relied on its registered SinuCleanse trademarks and expert opinions to challenge Water Pik's competing brand, but the courts found that its evidence did not establish a genuine factual dispute concerning likely consumer confusion. In particular, the Tenth Circuit's review of the survey calculations and marketplace comparisons left the asserted consumer associations unsupported by sufficiently reliable evidence.
The appellate judgment left Water Pik's favorable ruling intact, and the parties subsequently terminated the related TTAB opposition. The case concluded with the October 2, 2013 dismissal of that proceeding with prejudice, following the federal courts' rejection of Med-Systems' remaining counterclaims.
What was the main issue in Water Pik, Inc. v. Med-Systems, Inc.?
The central issue was whether Water Pik's SinuSense trademark created a likelihood of consumer confusion with Med-Systems' registered SinuCleanse trademarks. Med-Systems alleged that purchasers could mistakenly believe the competing nasal irrigation products came from the same company or affiliated businesses.
Why did the court find Med-Systems' consumer confusion survey unreliable?
The courts identified problems with Dr. Belch's respondent selection, sampling methods, suggestive questions, and product presentations that did not adequately reflect ordinary marketplace conditions. The Tenth Circuit also found errors in the confusion-rate calculations, leaving the survey insufficient to establish a genuine factual dispute concerning likely confusion.
Which expert witnesses were involved in the Water Pik trademark case?
Dr. Michael A. Belch and Dr. Gary T. Ford provided consumer confusion survey evidence, while Dr. David M. Yerkes submitted a linguistic analysis of the competing trademarks. Belch and Yerkes supported Med-Systems' infringement position, while Ford was retained by Water Pik.
Does a registered trademark guarantee success in an infringement lawsuit?
No. Federal trademark registration provides legal protections, but a party alleging infringement must still prove the required elements of its claim, including likelihood of consumer confusion. Med-Systems held incontestable trademark registrations, yet the courts concluded that the evidence did not support allowing its infringement claims to proceed to trial.
What was the final ruling in Water Pik, Inc. v. Med-Systems, Inc.?
The Tenth Circuit affirmed summary judgment for Water Pik on August 12, 2013, finding insufficient evidence of likely consumer confusion between SinuSense and SinuCleanse. The district court had also expressly stated that Water Pik had the right to register and use SinuSense, and the related TTAB opposition was dismissed with prejudice on October 2, 2013.
Trademark Infringement
Likelihood Of Confusion
Trade Dress
Brand Dilution
Branding
Market Research
Advertising and Marketing
Healthcare, +4
Healthcare
Breach Of Contract, +4
Healthcare
The Tenth Circuit affirmed summary judgment for Water Pik on August 12, 2013, finding insufficient evidence of likely consumer confusion between SinuSense and SinuCleanse. The district court had also expressly stated that Water Pik had the right to register and use SinuSense, and the related TTAB opposition was dismissed with prejudice on October 2, 2013.