The Federal Circuit ruled on Friday that a Fo2Go LLC photo processing patent was invalid as indefinite, upholding a lower court ruling that ended infringement lawsuits brought against companies including Pinterest Inc. and Yahoo Inc.

The appeals court, which heard arguments in the case Tuesday, issued a one-line order affirming a February decision from U.S. District Judge Richard G. Andrews in Delaware that the patent was indefinite.

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“We are very pleased that the court so quickly recognized the invalidity of Fo2Go’s claims,” Mark A. Lemley of Durie Tangri LLP, an attorney for Yahoo, Pinterest and Tumblr Inc., said on Friday.

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SmugMug is represented by Jerry Robin Selinger of Patterson & Sheridan LLP. The remaining defendant companies are represented by Mark A. Lemley and Ryan M. Kent of Durie Tangri LLP.