Earlier this week, in Teva v. Sandoz, the U.S. Supreme Court ruled that the “factual underpinnings” of a district court’s claim construction decision must be reviewed by the Federal Circuit under the “clear error” standard of review (see our Mar. 31, 2014 post for the question presented).  Many thanks to Clifford A. Katz and

Yesterday, March 6, 2013, in Radio Systems Corp. v. Lalor, No. 2012-1233, the Federal Circuit (Newman, Moore, and Reyna) held that equitable estoppel barred infringement claims for one patent against an alleged infringer’s successor-in-interest, but did not bar infringement claims for a related patent that issued after the misleading conduct began.  The court also