EP 2 397 156 relates to “Methods and compositions for the treatment of persistent infections and cancer by inhibiting the programmed cell death 1 (PD-1) pathway”.
Claim 1 is drafted in the form of a purpose-limited product claim, pursuant to Art 54(5), and is directed to a compound that reduces the activity or expression of a Programmed Cell Death-1 (PD-1) polypeptide=”PD-1 inhibitor”,