The Court of Appeals for the Federal Circuit affirmed a summary judgment for invalidity due to indefiniteness under Section 112 ¶ 2 because patentee’s apparatus claim included a method step. Rembrandt Data Tech. LP v. AOL, LLC, Case No. 2010-1002 (Fed. Cir. April 18, 2011) … [Read more...] about Mixing Function and Apparatus Elements in a Patent Claim Creates Invalid Claim