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Adding a Real Party in Interest Does Not Necessarily Alter the Petition’s Filing Date

Adding a Real Party in Interest Does Not Necessarily Alter the Petition’s Filing Date

In Mayne Pharma International Pty. Ltd. v. Merck Sharp & Dohme Corp., (Fed. Cir. June 21, 2019), the Federal Circuit affirmed the decision of the Patent Trial and Appeal Board (“Board”) permitting the petitioner to include an additional real party in interest in its mandatory notice without altering the petition’s filing date. Background Merck Sharp & Dohme Corp. (“MSD”) filed a petition for inter partes review against U.S. Patent Number 6,881,745 (“the ’745 patent”) assigned to Mayne Pharma International Pty. Ltd. (“Mayne”). In its Patent Owner’s Preliminary Response, Mayne urged the Board to decline institution because MSD’s parent company, Merck & Co., Inc. (“MCI”), was not identified as a real party in interest. Based on the record at that time, however, the Board was not persuaded and instituted review. Mayne then requested rehearing, arguing that the Board abused its discretion. The Board rejected this argument and maintained the proceeding. During… Continue Reading

July 2019
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