Pasteurized Eggs Corporation (PEC) (plaintiff) entered into a Patent Purchase Agreement (agreement) with the successor in interest to Bon Dente Joint Venture (Bon Dente) (defendant). Bon Dente recorded a copy of the agreement with the United States Patent and Trademark Office (PTO). After filing for bankruptcy, PEC brought a complaint against Bon Dente, claiming that the patents subject to the agreement were the property of PEC’s bankruptcy estate. Bon Dente contended that filing the agreement with the PTO had perfected Bon Dente’s security interest in the patents. PEC filed a motion for partial summary judgment.