Finding that appellants might satisfy the priority requirement because appellants' federal registration of the mark was prior to appellees' first use of the mark
Holding 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
Holding that purchaser confusion is the "primary focus" and, in case of goods and services that are sold, "the inquiry generally will turn on whether actual or potential `purchasers' are confused"
Concluding that “substantial and undisputed differences” between the parties' use of FROOTEE ICE and FROOT LOOPS warranted summary judgment because “the dissimilarity of the marks in their entireties itself made it unlikely that confusion would result from the simultaneous use of the marks”