By Victoria Slind-Flor

EBay Inc., the most-visited U.S. e-commerce site, and units including PayPal Inc. were sued by XPRT Ventures LLC for $3.8 billion over claims the online retailer infringed patents related to e-commerce payment systems.

EBay infringed six patents for online payments and stole trade secrets by sharing information in a patent application despite a confidentiality agreement, Greenwich, Connecticut- based XPRT said yesterday in a complaint in U.S. District Court in Wilmington, Delaware.

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