Tag: US Court of Appeals for the Federal Circuit
November 27, 2020
Intellectual Property | Patent
Intellectual Property | Patent
Patent Claim Drafting:“At least” and the conjunctive/di...
The phrase “at least one of” is commonly used in patent claims, but its interpretation is subjective and has led to some controversy. The issue that arises is this: when the phrase in its entirety is “at least one of A, B and C”, should it be understood as at least one of A AND at least one of B AND at least one of C, or should it be understood as at least one of A OR B OR C. ......