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• When materials recited in a claim are so related as to constitute claiming the members of the claimed group in the alternative, such as "selected from the group consisting of A, B and C."

  -- see MPEP 803.02 and 2173.05(h) for more

  USPTO - Cite This Source - This Definition
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  Cite Definition for Markush doctrine

  American Psychological Association (APA)

  Markush doctrine. (n.d.). United States Patent and Trademark Office Glossary. Retrieved January 28, 2023, from website: http://www.expertglossary.com/definition/markush-doctrine.

  Chicago Manual of Style (CMS)

  Markush doctrine. www.uspto.gov. United States Patent and Trademark Office Glossary. USPTO. http://www.expertglossary.com/definition/markush-doctrine (accessed: January 28, 2023).

  Modern Language Association (MLA)

  "Markush doctrine." United States Patent and Trademark Office Glossary. USPTO. 28 January. 2023 http://www.expertglossary.com/definition/markush-doctrine.

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