Federal Circuit Finds District Court Applied Overly Restrictive Interpretation of the Relation Back Doctrine

Recently, the Federal Circuit reversed, vacated and remanded a decision of the U.S. District Court for the District of Colorado that granted Mushkin, Inc.’s (“Mushkin’s”) motion to dismiss Anza Tech.’s (“Anza”) complaint seeking damages for alleged patent infringement occurring between March 2011 and April 2012 because the claim for damages was time-barred by the six-year statute of limitations in the Patent Act, 35 U.S.C. § 286. See Anza Tech., Inc. v. Mushkin, Inc., No. 2019-1045, 2019 U.S. App. LEXIS 24432 (Fed. Cir. Aug. 16, 2019) (Before Prost, Chief Judge, Newman and Bryson, Circuit Judges) (Opinion for the Court, Bryson, Circuit Judge). In its determination of whether newly alleged claims, based on separate patents, relate back to the date of the original complaint, the Federal Circuit considered: (1) the overlap of parties, (2) the overlap in the accused products, (3) the underlying science and technology, (4) time periods, and (5) any additional factors that might suggest a commonality or lack of commonality between the two sets of claims.

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