How is an improper Markush grouping rejection addressed?

An improper Markush grouping rejection can be addressed in several ways: Amend the claim so that the Markush grouping includes only members that share a single structural similarity and a common use. Present convincing arguments explaining why the members of the Markush grouping share a single structural similarity and common use. Show that the alternatives…

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What is the significance of the “improper Markush grouping” rejection in patent examination?

The “improper Markush grouping” rejection is a significant aspect of patent examination for Markush claims. As explained in MPEP 803.02: “A Markush claim may be rejected under judicially approved “improper Markush grouping” principles when the claim contains an improper grouping of alternatively useable members. A Markush claim contains an “improper Markush grouping” if either: (1)…

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