High Court Clears Way For More Challenges To Vague Patents

By Ryan Davis (June 2, 2014, 10:26 AM EDT) -- The U.S. Supreme Court on Monday gave powerful ammunition to companies seeking to invalidate patents for being overly vague, unanimously casting aside a Federal Circuit standard for proving that a patent is indefinite that the justices said allowed too much ambiguity in patents.

The Federal Circuit has long held that patents can only be found indefinite if they are "insolubly ambiguous," but the high court concluded that accused infringers must only prove that the patent fails to inform a person skilled in the art about the scope of the invention "with reasonable certainty."

The Federal Circuit's standard, the court wrote in an opinion...

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