Deque Systems Inc., a company specializing in web accessibility software, developed and registered multiple versions of its DevTools and Rules Help Pages products. To access these, users agreed not to copy, reverse-engineer, or otherwise misuse the software or its documentation. In 2021, BrowserStack, a competing firm, sought to develop its own accessibility testing tools. More than 100 BrowserStack employees created accounts with Deque—agreeing to Deque’s terms—and later, BrowserStack released an Accessibility Toolkit, which Deque alleged was developed by unlawfully copying and reverse-engineering DevTools and the Rules Help Pages.

Deque filed suit in the United States District Court for the Eastern District of Virginia, claiming copyright infringement, false advertising, breach of contract, and unjust enrichment, and sought injunctive relief, damages, and other remedies. During discovery, Deque repeatedly failed to properly disclose its damages calculations and supporting evidence by the deadlines set in the court’s scheduling order. Despite several opportunities to supplement its disclosures and a late attempt to introduce expert testimony, Deque did not timely provide the required information. BrowserStack moved to exclude Deque’s damages evidence and for summary judgment. The district court granted these motions, finding that Deque’s noncompliance with disclosure rules was neither substantially justified nor harmless, and that Deque presented no evidence supporting injunctive or other relief.

On appeal, the United States Court of Appeals for the Fourth Circuit reviewed and affirmed the district court’s judgment. The Fourth Circuit held that the district court did not abuse its discretion in excluding all evidence of Deque’s damages under Federal Rule of Civil Procedure 37(c)(1) due to repeated and unjustified failures to comply with disclosure requirements. The court also held that summary judgment for BrowserStack was warranted because Deque could not establish entitlement to injunctive, declaratory, or monetary relief. View “Deque Systems Inc. v. Browserstack, Inc.” on Justia Law