(January 30, 2017, 11:52 AM EST) -- WASHINGTON, D.C. — A preliminary injunction granted by an Illinois federal judge was premised on an erroneous construction of the disputed claim term “controller” as it appears in a patent relating to garage door openers, the Federal Circuit U.S. Court of Appeals ruled Jan. 25 (The Chamberlain Group Inc. v. Techtronic Industries North America Inc., et al., Nos. 16-2713, 17-1220, Fed. Cir.; 2017 U.S. App. LEXIS 1294)....