Patent Trial and Appeal Board

The Patent Trial and Appeal Board (PTAB) recently upheld the patentability of a video game-related patent, ruling the computer graphics features were not obvious over the prior art. The patent (US Patent 7,061,488) address techniques for rendering lighting and shadows in computer graphic simulations where there are at least 2 virtual light sources. The claims were alleged to be obvious because the high level concepts were allegedly known in the art as evidenced by various prior art references. However, the PTAB disagreed stating that there was no evidence that it would have been obvious to combine the prior art features. This case shows that even if general concepts are known, improvements to those concepts and/or a unique combination of concepts can be patentable.
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