Are there exceptions to the rule against using trademarks or trade names as claim limitations?

Yes, there are exceptions to the rule against using trademarks or trade names as claim limitations. The MPEP 2173.05(u) states:

“Ex parte Simpson, 218 USPQ 1020 (Bd. App. 1982) states that a trademark or trade name is permissible in a claim to identify the source of goods.“

This exception allows for the use of trademarks or trade names in claims under specific circumstances:

• When used to identify the source of goods, rather than the goods themselves.
• If the trademark or trade name is used in conjunction with the trademark’s generic terminology.
• When the use does not affect the clarity or definiteness of the claim.

However, it’s important to note that even when identifying the source, care should be taken to ensure the claim remains clear and definite.

To learn more:

• trademark exceptions
• trade name exceptions
• patent claim limitations
• Ex parte Simpson