PATENT HARBOR, LLC, Plaintiff-Appellant, v. AUDIOVOX CORPORATION and Audiovox Electronics Corporation, Defendants-Appellees, and RadioShack Corporation, Defendant-Appellee, and Vizio, Inc., Defendant-Appellee, and Imation Corporation, Defendant-Appellee, and Best Buy Co., Inc., Defendant-Appellee, and Denon Electronics (USA), LLC, Defendant-Appellee