an affir-mance.” (internal quotation marks and citation omitted)), and (2) a request from the Coalition to reconsider Wind Tower Trade Coalition en banc due to its prece-dential status, Deckers Corp. v. United States, 752 F.3d 949, 965 (Fed.Cir.2014) (explaining that panels do not have the authority to overrule prior precedential panel decisions unless the en banc court or the Supreme Court overturns the prior decision). Siemens briefly discusses our duty effective date holding in Wind Tower Trade Coalition in the background section of its opening brief. Appellant’s Br. 18-20. Even assuming that we construed that discussion to be an argument, our precedent would require us to consider it waived for at least two reasons. See In re Baxter Int'l, Inc., 678 F.3d 1357, 1362 (Fed.Cir.2012) (<HOLDING>); see also SmithKline Beecham Corp. v. Apotex
holding that argument raised at oral argument that was not included in brief is waived holding that a party waives an argument that it raises in the background section of its brief but not in the argument section holding that a party waives an argument if the party fails to elaborate or provide any citation of authority in support of the argument holding that party waived argument by failing to brief it on appeal holding that an argument is not preserved unless a party raises it in its opening brief