PTAB Doubles Down on Interference Estoppel Issue, PTAB Litigation Blog
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The Patent Trial and Appeal Board held all challenged claims of IGT’s patent unpatentable as obvious over two prior art patents. Zynga Inc. v. IGT, IPR2022-00199-32. In doing so, the PTAB further held that, contrary to IGT’s position, there was no interference estoppel.
*Anthony Kim, a former Summer Associate in Jones Day’s Cleveland Office assisted in the preparation of this blog
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