Actual confusion is not an element of trademark infringement under the Lanham Act. The other three elements are essential for establishing a claim of trademark infringement.

The similarity of the marks is the primary factor considered in determining the likelihood of confusion between two trademarks. The other factors, while relevant, are secondary considerations.

Likelihood of confusion is not a type of trademark dilution. Blurring, tarnishment, and diminution are the three recognized types of trademark dilution.

The legal standard for determining whether a mark is famous is nationwide recognition. The other factors, while relevant, are not sufficient to establish fame.

All of the above are potential remedies for trademark infringement. The specific remedy or combination of remedies granted will depend on the circumstances of the case.

First Amendment rights are not a defense to a claim of trademark infringement. The other three defenses may be asserted in appropriate circumstances.

The purpose of the Trademark Dilution Revision Act (TDRA) is to expand the scope of trademark dilution protection by eliminating the requirement of actual economic harm.

Market share is not a factor considered in determining the strength of a trademark. The other three factors are relevant to the strength of a mark.

Infringement requires actual confusion, while dilution does not. Dilution is concerned with the whittling away of the distinctiveness of a mark, even in the absence of actual confusion.

Trade dress is not a type of trademark. It is a form of intellectual property that protects the overall appearance of a product or service.

All of the above are significant benefits of a trademark registration.

Cancellation of the infringing mark is not a remedy for trademark dilution. The other three remedies may be available in appropriate circumstances.

The purpose of the Lanham Act is to protect trademarks. It is the primary federal statute governing trademark law in the United States.

Intent of the infringer is not a factor considered in determining the likelihood of confusion between two marks. The other three factors are relevant to the likelihood of confusion.