Early this spring, in Hoffmann-La Roche, Inc. v. Promega, the United States Court of Appeals for the Federal Circuit reviewed a district court opinion on the validity of an issued patent 1. The court ...

No matter how long you’ve been speaking English, no matter how hard you’ve worked to perfect your grammar, some past tense verbs can stump you. For example, the day after you decide to grin and bear ...

In English, the past perfect tense describes an action completed before another past event, or an action completed before a specific time focus. Grammatically, as the present perfect does, the past ...