The United States District Court for the Western District of Pennsylvania denied HT’s motion for a preliminary injunction on the counterclaim. HT has appealed from the denial of the preliminary injunction. HT contended in the district court and argues on appeal that Judkins acted in bad faith when he sent the letters because he knew that his U.S. Patent No. 7,182,120 B1 (“the ’120 patent”), which the letters suggest is infringed by HT’s Polaris product, was unenforceable. We affirm the district court’s denial of the preliminary injunction and deny Judkins’s motion for attorney’s fees.