Holding that intent may be proven circumstantially, "[b]ut such evidence must still be clear and convincing, and inferences drawn from lesser evidence cannot satisfy the deceptive intent requirement"
Finding similarity between LASER for golf clubs and golf balls and LASERSWING for golf practice devices, and noting that "the term ‘swing’ is both common and descriptive" and therefore "may be given little weight in reaching a conclusion on likelihood of confusion"
In Morehouse Mfg. Corp. v. J. Strickland Co., 407 F.2d 881, 888-89, 160 USPQ 715, 721 (CCPA 1969) the court stated that false suggestion requires the existence of likelihood of confusion.