WASHINGTON (Sept. 22) — Sinorgchem Co., Shandong, has petitioned the U.S. Federal Circuit appeals court for an appeal of the International Trade Commission´ order forbidding the Chinese chemical manufacturer or its U.S. sales agent, Sovereign Chemical Co., to sell the rubber antidegradant and its feedstock 4-ADPA in the U.S.
The ITC found July 13 that Sinorgchem used Flexsys America L.P.´s patents for making 6PPD and 4-ADPA without Flexsys´s permission. So far Sinorgchem has filed only a notice of appeal with the Federal Circuit court, with a brief to follow, said Manni Li, a Washington attorney representing Sinorgchem.
Flexsys, meanwhile, continues its $20 million lawsuit against Sinorgchem, Sovereign and Kumho Tire Co. Inc. for alleged patent infringement based on the ITC ruling.