With the “improper Markush grouping” rejection, U.S. patent examiners may reject claims reciting various alternative polynucleotide or polypeptide sequences. However, there is no per se rule that groupings of alternative...more
We previously reported here on a Patent Trial and Appeal Board (PTAB) decision involving a case in which a patent eligibility rejection was overcome by replacing a “comparing” step with a recitation that the sample is from a...more