Life Data Labs, Inc. v. Helfter Enterprises, Inc.
4 Cited authorities
In re E. I. DuPont DeNemours & Co.
476 F.2d 1357 (C.C.P.A. 1973) Cited 188 times 30 Legal AnalysesReciting thirteen factors to be considered, referred to as "DuPont factors"
Kenner Parker Toys v. Rose Art Industries
963 F.2d 350 (Fed. Cir. 1992) Cited 49 timesHolding that in light of the appearance, sound and meaning of the marks PLAY-DOH and FUNDOUGH, consumers may receive the "same commercial impression" from the marks
Century 21 Real Estate Corp. v. Century Life of America
970 F.2d 874 (Fed. Cir. 1992) Cited 38 timesFinding similarity between "CENTURY 21" and "CENTURY LIFE OF AMERICA" in part because "consumers must first notice th[e] identical lead word"
Weiss Associates, Inc. v. HRL Associates, Inc.
902 F.2d 1546 (Fed. Cir. 1990) Cited 21 timesAffirming denial of registration of "TMM" mark for software because: it was likely to be confused with a registered mark "TMS," also used for software; "[t]he marks sound alike and look alike; and "[t]he products are very similar and directly compete."