This is an opinion by the United States Court of Appeals for the Federal Circuit concerning a patent infringement lawsuit between Fintiv, Inc. and PayPal Holdings, Inc. Fintiv sued PayPal, asserting infringement of four patents related to a "cloud-based transaction system". The core issue on appeal is the district court's ruling that certain claim terms, specifically "payment handler" and "payment handler service," are indefinite under 35 U.S.C. § 112 ¶ 6. The court examined whether these terms constitute means-plus-function limitations and if the patent specifications provide sufficient corresponding structure or an algorithm for the claimed functions, ultimately affirming the district court's decision that the claims are indefinite due to the lack of disclosed structure.

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