Fed. Circ. Agrees Fax Machine Patents Are Indefinite

By Dani Kass (February 10, 2021, 7:39 PM EST) -- A Delaware federal judge properly found that claims of four Infinity Computer Products Inc. patents for using a fax machine as a computer printer or scanner are invalid as indefinite, the Federal Circuit affirmed Wednesday.

A three-judge panel said two terms in Infinity's patents are indefinite because it's impossible to tell their exact bounds, and Infinity took conflicting positions on that question during earlier proceedings. The precedential decision is a win for Oki Data Americas Inc., which had been accused of infringing the patents.

The terms-in-question are "passive link," which refers to the connection between a fax machine and a computer,...

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