Vague Phrase In Patent Invalidates Claim: Court

Law360, New York (January 25, 2008, 12:00 AM EST) -- An appellate judge has affirmed a lower court's dismissal of a patent lawsuit brought by Halliburton Energy Services Inc. against rival M-I LLC, agreeing with the lower court that a key term in the patent was vague enough that the patent claims could not be construed.

Judge Paul Michel of the U.S. Court of Appeals for the Federal Circuit, in a decision Friday, agreed with a Texas district court that the crucial term in Halliburton's patent claim – “fragile gel” – could not be definitely construed....
To view the full article, register now.