MUMBAI, India, July 24 -- Intellectual Property India has published a patent application (202547069311 A) filed by Sumitomo Chemical Company, Limited on July 21, 2025, for Oligonucleotide Production Method.

Inventor includes Tanaka, Yuki.

The application for the patent was published on July 17, 2026, under issue no. 29/2026.

Abstract: The present invention provides: an oligonucleotide production method comprising a step for reacting an n-polymerized oligonucleotide (n represents an arbitrarily defined integer of two or more) and water or an aqueous solution having a pH of 1-8 to degrade branch bodies; and an oligonucleotide in which the content proportion of branch bodies in the oligonucleotide is at a certain amount or less.

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