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Former partners DuPont, Koch fight over Nylon patents

By Lawrence B. Ebert, Esq.

DuPont Co. has filed a patent infringement lawsuit against Koch Industries Inc.'s Invista unit in SDNY.

Dow Jones reports: Invista says it bought the technology to make a critical chemical in the creation of the resins in question as part of its $4.2 billion purchase of DuPont's fibers business in 2004. But DuPont contends Invista isn't allowed to use DuPont technology to make the resins for several years.

The 2004 deal is also subject to a lawsuit, as Invista claimed in a March filing that plants it acquired had serious safety deficiencies that needed fixing. DuPont has sought to have the federal case dismissed, saying the sale agreement was in fact violated by Invista and that DuPont is protected from the legal claims raised by Invista.

Meanwhile, Invista says DuPont/Rhodia are unlawfully using trade secrets.

Full post as published by IPBiz on November 11, 2008 (boomark / email).