District Court Judge Construes Esophageal and Conical Stent-Related Patent Terms, Finding Three Patents Invalid

April 26, 2016 – Judge Douglas P. Woodlock of the United States District Court for the District of Massachusetts construed patent terms for nine patents in the Boston Scientific Corp., Boston Scientific SciMed, Inc., Boston Scientific Ltd., and Endovascular Technologies, Inc. v. Cook Inc., Wilson-Cook Medical Inc., Cook Medical Inc., Cook Ireland Ltd., Taewoong Medical Co. Ltd., Chek-Med Systems, Inc., Standard Sci-Tech Inc., Endochoice Inc., and Sewoon Medical Co. Ltd. case, finding three patents not invalid. Claim construction concerned U.S. Patent Nos. 6,007,574; 7,419,502; 7,419,503; 7,736,386; 7,763,068 (each entitled “Stent”); 6,533,810; 6818015 (both entitled “Conical Stent”); 5,876,448 (entitled, “Esophageal Stent”); and 7,160,323 (entitled, “Method for Reconstructing Body Lumens”). Regarding invalidity challenges for U.S. Patent Nos. 6,007,574; 6,533,810; and 6818015, Judge Woodlock found each of the patents not invalid for indefiniteness. This case remains pending and is captioned, Boston Scientific Corp. et al v. Cook Inc. et al, 1-10-cv-11646 (D. Mass.).

By: H. Rachael Million-Perez

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