Adnexus v Meta Platforms (Fed. Circ., December 5, 2025) 2024-1551

This episode is about an opinion from the United States Court of Appeals for the Federal Circuit regarding the case of Adnexus Inc. v. Meta Platforms, Inc., which concerns a patent infringement lawsuit. Adnexus, the plaintiff-appellant, appealed the dismissal of its lawsuit against Meta for failure to state a claim, specifically focusing on whether Meta’s "Lead Ads" product infringed on a patent for an online advertising system. The core of the dispute revolves around the interpretation of the patent claim requiring the retrieval of a user profile that includes "delivery method preferences"; the district court ruled that Adnexus failed to plausibly allege this element was met because contact information was distinct from delivery method preferences. However, the Court of Appeals vacated the dismissal and remanded the case, finding that the district court erred by implicitly construing the claim term against Adnexus without a proper claim construction process. The appellate court concluded that Adnexus's allegations, which suggested that contact information could be considered a form of delivery method preference, were sufficient to state a plausible claim for infringement.

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