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IP Frontiers: The least bit of difference – watch use of and/or

On Jan. 3, the Patent Trial and Appeal Board ruled that a claim constructed as “at least one of [A] and/or [B]” clearly covered combinations including A alone, B alone, and A and B in combination, overturning an examiner’s rejection that held the claim language indefinite, Ex parte Gross, 2014. By itself this would merit little ...