Principal Register

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In United States trademark law, the Principal Register is the primary register of trademarks maintained by the United States Patent and Trademark Office. It is governed by Subchapter I of the Lanham Act.

Having a mark registered under the Principal Register confers certain benefits on the holder of the mark. Among them are:

Trademarks must be inherently distinctive, or have acquired sufficient secondary meaning, to be registered on the Principal Register.

See also[edit]


  • Merges, Robert P., Menell, Peter S., and Lemley, Mark A. Intellectual Property in the New Technological Age, Third Edition. Aspen Publishers, 2003. ISBN 0-7355-3652-X pp. 591–592.

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