Reyna, Circuit Judge.
Ericsson Inc. and Telefonaktiebolaget LM Ericsson appeal the final written decision of the U.S. Patent and Trademark Office's Patent Trial and Appeal Board, finding that claims 1-3, 6-9, and 12-14 of U.S. Patent No. 5,602,831 are not unpatentable under 35 U.S.C. § 103. Because we conclude that the Board improperly did...
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