L.A. TECH & MEDIA LAW FIRM – Intellectual Property & Technology Law

Do This If You Suspect Trademark Infringement

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Trademark infringement carries a plethora of consequences and ramifications for brand owners, particularly entrepreneurs, small businesses, and tech startups launching a new software or hardware product. Trademarks are source identifiers and they are designed to protect the public from fraud. Trademarks do not necessarily reward creativity, novelty, or originality the way patents and copyrights do, but rather, trademarks are a consumer protection law.

Although part of the same intellectual property categorization of patents rights, copyrights, and even trade secret rights, trademark infringement operates differently, and so does trademark protection analysis, enforcement, defense, and settlement.

Do This If You Suspect Trademark Infringement

Trademark Infringement Factors

Trademark Infringement happens when a word, symbol or other insignia is being used in the marketplace in the United States, whether at retail, wholesale, or online, in a way so as to cause a likelihood of confusion with an existing trademark. Courts and lawyers analyzing for trademark infringement evaluate likelihood of confusion under the standard multi-factor test which takes into account the similarity or dissimilarity of the marks in their entireties as to appearance, sound, connotation, and commercial impression, and, the nature of the goods in established, or likely-to-continue trade channels. The factors also consider conditions under which and buyers to whom sales are made, i.e. “impulse” vs. careful, sophisticated purchasing, the fame of the prior mark, the number and nature of similar marks in use on similar goods, the nature and extent of any actual confusion, the length of time during and the conditions under which there has been concurrent use without evidence of actual confusion, the variety of goods on which a mark is or is not used, the market interface between the applicant and the owner of a prior mark, and, any other established fact probative of the effect of use.

The United States Patent and Trademark Office (USPTO) Trademark Manual of Examining Procedures (TMEP) describes likelihood of confusion as:

The issue is not whether the respective marks themselves, or the goods or services offered under the marks, are likely to be confused but, rather, whether there is a likelihood of confusion as to the source or sponsorship of the goods or services because of the marks used thereon. See, e.g., Paula Payne Prods. Co. v. Johnson’s Publ’g Co., 473 F.2d 901, 902, 177 USPQ 76, 77 (C.C.P.A. 1973) (“[T]he question is not whether people will confuse the marks, but rather whether the marks will confuse people into believing that the goods they identify emanate from the same source.”); In re Majestic Distilling Co., 315 F.3d 1311, 1316, 65 USPQ2d 1201, 1205 (Fed. Cir. 2003) (“[T]he . . . mistaken belief that [a good] is manufactured or sponsored by the same entity [as another good] . . . is precisely the mistake that §2(d) of the Lanham Act seeks to prevent.”); In re Shell Oil Co., 992 F.2d 1204, 1207, 26 USPQ2d 1687, 1689 (Fed. Cir. 1993) (“The degree of ‘relatedness’ must be viewed in the context of all the factors, in determining whether the services are sufficiently related that a reasonable consumer would be confused as to source or sponsorship.”); In re Binion, 93 USPQ2d 1531, 1534, 1535 (TTAB 2009); In re Ass’n of the U.S. Army, 85 USPQ2d 1264, 1267-68, 1270 (TTAB 2007) ; Hilson Research Inc. v. Soc’y for Human Res. Mgmt., 27 USPQ2d 1423, 1429 (TTAB 1993) (“Although confusion, mistake or deception about source or origin is the usual issue posed under Section 2(d), any confusion made likely by a junior user’s mark is cause for refusal; likelihood of confusion encompasses confusion of sponsorship, affiliation or connection.”).

To legally claim trademark infringement in a federal court, a brand owner, when a technology startup or a Fortune 500 Company, must prove that it owns a valid mark, that it has priority (its rights in the mark(s) are “senior” to the defendant’s), and that the defendant’s mark is likely to cause confusion in the minds of consumers about the source or sponsorship of the goods or services offered under the parties’ marks. When a plaintiff owns a federal trademark registration on the Principal Register, there is a legal presumption of the validity and ownership of the mark as well as of the exclusive right to use the mark nationwide on or in connection with the goods or services listed in the registration.

Do This If You Suspect Trademark Infringement

Generally, the court will consider evidence addressing various trademark infringement factors to determine whether there is a likelihood of confusion among consumers. The key factors considered in most cases are the degree of similarity between the marks at issue and whether the parties’ goods and/or services are sufficiently related that consumers are likely to assume (mistakenly) that they come from a common source. Other factors that courts typically consider include how and where the parties’ goods or services are advertised, marketed, and sold; the purchasing conditions; the range of prospective purchasers of the goods or services; whether there is any evidence of actual confusion caused by the allegedly infringing mark; the defendant’s intent in adopting its mark; and the strength of the plaintiff’s mark.

The particular factors considered in a likelihood-of-confusion determination, as well as the weighing of those factors, vary from case to case. And the amount and quality of the evidence involved can have a significant impact on the outcome of an infringement lawsuit.

Trademark Infringement Attorney

In addition to claiming likelihood of confusion and trademark infringement, a trademark owner may claim trademark “dilution,” asserting that it owns a famous mark and the use of your mark diminishes the strength or value of the trademark owner’s mark by “blurring” the mark’s distinctiveness or “tarnishing” the mark’s image by connecting it to something distasteful or objectionable-even if there is no likelihood of confusion.

An experienced trademark attorney, taking the particular circumstances of your case into consideration, should be able to provide you with an opinion as to the validity and strength of a trademark owner’s claims.


Trademark infringement may be difficult to detect because sometimes even identical words have been deemed to be non-infringing, such as the word PANDORA® for music streaming services and PANDORA® for jewelry stores. So if a brand owner, such an entrepreneurs, the CEO of a technology startup company, or other small business suspect trademark infringement, they are well advised to collect as much evidence of the potential trademark infringement as possible, then consult with an experienced trademark attorney to analyze for trademark infringement, trademark dilution, trademark tarnishment, or other legal trademark claims under federal trademark law.



Picture of David N. Sharifi, Esq.
David N. Sharifi, Esq.

David N. Sharifi, Esq. is a Los Angeles based intellectual property attorney and technology startup consultant with focuses in entertainment law, emerging technologies, trademark protection, and “the internet of things”. David was recognized as one of the Top 30 Most Influential Attorneys in Digital Media and E-Commerce Law by the Los Angeles Business Journal.
Office: Ph: 310-751-0181; david@latml.com.

Disclaimer: The content above is a discussion of legal issues and general information; it does not constitute legal advice and should not be used as such without seeking professional legal counsel. Reading the content above does not create an attorney-client relationship. All trademarks are the property of L.A. Tech & Media Law Firm or their respective owners. Copyright 2024. All rights reserved.

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