In re Albrecht

BALDWIN, Judge.

This is an appeal from the decision of the Patent and Trademark Office Board of Appeals affirming the examiner’s rejection of claims 1 — 5 of appellants’ application 1 entitled “Bis-Basic Esters and Amides of Dibenzothiophene.” We affirm in part and reverse in part.

The Invention

Appellants claim a novel class of certain bis-basic esters and amides2 of dibenzothiophene, disclosed as possessing utility as antiviral agents. The claims on appeal are as follows:

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wherein:

(A) each of R1 and R2 is hydrogen, (lower)alkyl, cycloalkyl of 3 to 6 ring carbon atoms, alkenyl of 3 to 6 carbon…