LOS ANGELES--(BUSINESS WIRE)--Legend3D, a leader in 2D to 3D conversion technology, announced today that it has filed a Petition for Inter Partes Review (IPR) of U.S. Patent Number 8,922,628 with the Patent Trial and Appeal Board (PTAB) to invalidate all claims of Prime Focus’s single U.S. patent that recently issued on December 30, 2014. The Petition asserts that Prime Focus’s patent is anticipated by well-known prior art and is obvious and that the patent should therefore be reviewed and inva
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