Alarcritech, Inc. v. Intel Corp., No. 19-1467 (Fed. Cir. 2020)
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The patent relates to computer networking and is specifically directed to offloading certain network-related processing tasks from a host computer’s central processing unit (CPU) to an “intelligent network interface card” (INIC) to improve performance by accelerating network communications while freeing the CPU to focus on other tasks. According to the patent, one of the tasks that can be offloaded from the CPU to the INIC is the reassembly of data from packets received by the host computer from the network.
The Patent Trial and Appeal Board found certain claims unpatentable as obvious. The Federal Circuit vacated in part. The Board did not adequately support its finding that the asserted prior art combination teaches or suggests a limitation recited in claims 41–43. The court remanded for the Board to reconsider whether the asserted prior art teaches or suggests the entirety of the reassembly limitations, including the requirement that reassembly takes place in the network interface. The court otherwise affirmed.
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