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Intellectual property law

CAFC Says 'Words of Approximation' in Patent Claims Must Be Sufficiently Explained to Avoid Indefiniteness

The CAFC affirmed a ruling that certain claims of Enviro Tech's patent were indefinite due to the term 'about' lacking reasonable certainty.

Intellectual property law

The Federal Circuit invalidated most claims of a patent for being indefinite regarding pH range specifications.

The CAFC affirmed a ruling that certain claims of Enviro Tech's patent were indefinite due to the term 'about' lacking reasonable certainty.

The Federal Circuit invalidated most claims of a patent for being indefinite regarding pH range specifications.

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