MPEP Q&A 230: What is an ‘improper Markush grouping’? - a podcast by Lisa Parmley, USPTO Patent Practitioner #51006
from 2021-08-17T14:15:03
Question: When does a Markush claim contain an ‘improper Markush grouping’? Answer: A Markush claim contains an “improper Markush grouping” if either: (1) the members of the Markush group do not share a “single structural similarity” or (2) the members do not share a common use. Chapter Details: The answer to this question can be found in chapter 2100 of the MPEP. This chapter covers Patentability. The answer is from the 9th Edition, Revision 10.2019. Depending on future changes to the MPEP, the question and answer may or may not be applicable in later Editions or revisions. Section Summary: This…
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