Can trademarks or trade names be used in patent claims?

While trademarks or trade names can appear in patent claims, their use to identify or describe a particular material or product generally renders the claim indefinite under 35 U.S.C. 112(b). According to MPEP 2173.05(u): “If the trademark or trade name is used in a claim as a limitation to identify or describe a particular material…

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How does the MPEP address relative terms in patent claims?

The MPEP addresses relative terms in patent claims through specific form paragraphs, particularly form paragraph 7.34.03. This paragraph is used when a relative term or term of degree renders a claim indefinite. The form paragraph states: The term “[1]” in claim [2] is a relative term which renders the claim indefinite. The term “[1]” is…

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What is a Markush group in a patent claim?

A Markush group is a way of claiming a list of alternatively useable members in a patent claim. According to MPEP 2173.05(h): “A Markush grouping is a closed group of alternatives, i.e., the selection is made from a group ‘consisting of’ (rather than ‘comprising’ or ‘including’) the alternative members.” Markush groups are typically used to…

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What are the issues with using phrases like “for example,” “such as,” or “or the like” in patent claims?

The MPEP addresses the use of phrases like “for example,” “such as,” or “or the like” in patent claims through specific form paragraphs. These phrases can render claims indefinite under 35 U.S.C. 112(b) or pre-AIA 35 U.S.C. 112, second paragraph. 1. For the phrase “for example,” form paragraph 7.34.08 states: Regarding claim [1], the phrase…

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