Trademark dilution gives the owner of a trademark standing to prevent others from using that mark in a way that would lessen the mark’s uniqueness. Usually this comes up when an unauthorized user puts the trademark on products generally unrelated to those of the trademark owner. For example, a famous trademark used by one person to refer to bottled water might be diluted if another company began using a similar mark to refer to pads of paper. Dilution is a specific type of trademark infringement that only applies to famous marks. Ordinary marks can be infringed only when there exists a likelihood of confusion as to the source of the product or service being identified by the allegedly infringing use. Non-famous marks are intrinsically unlikely to create confusion in unrelated markets. Famous marks, on the other hand, have a vast potential for confusion since it is inherently well-known by consumers. The idea is that consumers will assume that the diluting user has is affiliated with the owner of the mark, even if product or service is being sold in an entirely different market.
A diluted trademark loses its capacity to symbolize a single source. But, to qualify for dilution protection, a mark must be unusually strong. Many “brand names” would qualify, especially the ones with unique or made-up names like Coca-Cola or Motorola, as opposed to marks using existing words or surnames like Apple or Zenith.
Dilution protection was previously used to attack domain name infringement of trademarks, i.e. cybersquatting. However, the Trademark Dilution Revision Act of 2006 overturned the Supreme Court decision in Moseley v. V Secret Catalogue, Inc., 537 U.S. 418 (2003). Moseley required the plaintiff needed to prove actual dilution under the Federal Trademark Dilution Act (“FTDA”). The TDRA only requires the plaintiff to show the defendant’s mark is likely to cause dilution, but reduced the scope of marks falling under its protection by requiring that marks be nationally well known to qualify for protection.
In a well-known example, Wolfe’s Borough Coffee, Inc. sold its coffee under the marks “Charbucks Blend” and “Mr. Charbucks,” Starbucks Corporation sued for dilution, claiming that Wolfe’s blurred and tarnished their marks. The Second Circuit Court of Appeals decided that marks need not be “substantially similar” for dilution to occur when other factors supporting a finding of dilution, such as the distinctiveness of the famous mark and the degree of its recognition, were present. The court found that these other factors may be sufficient to support a dilution claim and remanded the case to the district court in order to determine whether dilution had in fact occurred.
The TDRA requires courts to consider the following factors when analyzing whether dilution by blurring has occurred:
- the degree of similarity between the mark and the famous mark,
- the degree of inherent or acquired distinctiveness of the famous mark,
- the extent to which the owner of the famous mark is engaging in substantially exclusive use of the mark,
- the degree of recognition of the famous mark,
- whether the user of the non-famous mark intended to create an association with the famous mark, and
- any actual association between the non-famous mark and the famous mark.
15 U.S.C. §1125(c)(2)(B).
In another post, we will explore defenses to claims of dilution, in case you just can’t resist tempting fate when deciding on a mark for your product or service.
Attorney Aaron Thalwitzer practices civil litigation and intellectual property law in Melbourne, Brevard County, Florida.































