The CAFC interprets 35 USC 315(b),(d) adversely to St. Jude
From the decision
We hold that we may not hear St. Jude’s appeal from the Director’s denial of the petition for inter partes review. We base that conclusion on the structure of the inter partes review provisions, on the language of section 314(d) within that structure, and on our jurisdictional statute read in light of those provisions. (...)
In fact, the statute goes beyond merely omitting, and underscoring through its structure the omission of, a right to appeal the non-institution decision. It contains a broadly worded bar on appeal. Under the title, “No Ap- peal,” Section 314(d) declares that “[t]he determination by the Director whether to institute an inter partes review under this section shall be final and nonappealable.” Id. § 314(d). That declaration may well preclude all review by any route, which we need not decide. It certainly bars an appeal of the non-institution decision here.