Appeal No. 1997-1081 Page 7
Application No. 08/111,922
§ 112, second paragraph, is whether the claims meet the
threshold requirements of clarity and precision, not whether
more suitable language or modes of expression are available.
Some latitude in the manner of expression and the aptness of
terms is permitted even though the claim language is not as
precise as the examiner might desire. If the scope of the
invention sought to be patented can be determined from the
language of the claims with a reasonable degree of certainty,
a rejection of the claims under 35 U.S.C. § 112, second
paragraph, is inappropriate.
Thus, the failure to provide explicit antecedent basis
for terms does not always render a claim indefinite. As
stated above, if the scope of a claim would be reasonably
ascertainable by those skilled in the art, then the claim is
not indefinite. See Ex parte Porter, 25 USPQ2d 1144, 1146
(Bd. Pat. App. & Inter. 1992).
Furthermore, the appellants may use functional language,
alternative expressions, negative limitations, or any style of
expression or format of claim which makes clear the boundaries
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