The Patent Trial and Appeal Board issued a decision denying the institution of an inter partes review (IPR) proceeding petitioned by home appliance developer SharkNinja. The decision leaves in place all claims of a patent asserted against SharkNinja in U.S. district court through a patent infringement case filed by appliance hose manufacturer Flexible Technologies. In denying SharkNinja’s petition for IPR, the PTAB panel of Administrative Patent Judges (APJs) found that implementing the hose found in Rohn to be a stretch hose as taught by Martin would render Rohn’s hose inoperable for its intended purpose… As for the Nagayoshi prior art reference, the PTAB sided with Flexible Technologies in finding that SharkNinja’s asserted combination is difficult to distinguish from a hindsight analysis…
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