Shopify, Express Mobile Spar Over Nixed $40 Million Verdict (2)

Express Mobile Inc. urged a federal appeals court Friday to reinstate a $40 million patent verdict against Shopify Inc., arguing that jurors reasonably understood how the e-commerce platform’s “Add to Cart” feature infringed its user-interface patents.

A three-judge panel at the US Court of Appeals for the Federal Circuit pressed Express Mobile’s attorney on whether the company’s expert ever clearly told jurors that the entire Add to Cart functionality—rather than only the button or a pop-up—was the single “defined UI object” required by the claims of three related Express Mobile user-interface patents. A trial judge had thrown out the ...