EUGENE A. WRIGHT, Circuit Judge:
Photo Electronics Corporation sued the Ferrex Corporation for infringement of Patents No. 3,351,707 ('707) and No. 3,471,740 ('740). Ferrex countered that the patents in suit were obvious, obtained by fraud and not infringed. It counterclaimed that Photo Electronics' conduct in obtaining the patents and prosecuting the infringement action was violative of the antitrust laws. The district court held the patents valid and infringed,...
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