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"
Finding likelihood of confusion between "Martin's" for bread and "Martin's" for cheese, since the products "travel in the same channels of trade," are sold by the "same retail outlets," and are "often used in combination"
Finding similarity between furniture and "general merchandise store services," and rejecting the distinction between goods and services as having "little or no legal significance"
Rejecting argument that SQUIRT SQUAD in standard letters is distinct from SQUIRT registered in “distinctive lettering on a dark medallion”; “[b]y presenting its mark merely in a typed drawing, a difference cannot legally be asserted by that party”
Providing rules for applicants “who seek to register words, letters, numbers, or any combination thereof without claim to any particular font style, size, or color”