IP Blog

PTAB ex parte

Words of Approximation: The Fine Line between being Definite or Indefinite in Prosecution

A search of PTAB ex partes appeals over the past three months shows that relatively few decisions have dealt with words of approximation.  The two recent ex partes decisions discussed below both determine whether the claim term “about” is definite.  One decision held that “about” was definite, while the other decision held that “about” was indefinite. In Ex parte Karl...

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