In Hutchison v. Sunbeam Coal Corp., 513 Pa. 192, 519 A.2d 385 (1986), the Pennsylvania Supreme Court stated that "[a] contract is ambiguous if it is reasonably susceptible of different constructions and capable of being understood in more than one sense."
Stating that "[c]lear contractual terms that are capable of one reasonable interpretation must be given effect without reference to matters outside the contract"
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"
Defining patent ambiguity as that which "appears on the face of the contract and is a result of defective or obscure language" and latent ambiguity as that which "arises from collateral facts which make the meaning of the contract uncertain" despite facially clear language in the contract
15 U.S.C. § 1052 Cited 1,585 times 272 Legal Analyses
Granting authority to refuse registration to a trademark that so resembles a registered mark "as to be likely, when used on or in connection with the goods of the applicant, to cause confusion, or to cause mistake, or to deceive"
Providing that in inter partes proceeding, "[t]he allegation in an application for registration, or in a registration, of a date of use is not evidence on behalf of the applicant or registrant" but, rather, "a date of use of a mark must be established by competent evidence"