Patent ID: 11884724
Assignee: MERCK PATENT GMBH
Field: Pharmaceuticals (Chemistry)
Classification: CPC C  A | IPC A  C

Claim 2:
3. The isolated anti-PD-L1 antibody or antigen binding fragment of claim 2, wherein:
(a) X1 is M, I or S; X2 is R, K, L, M or I; X3 is F or M; X4 is F or I; X5 is S or T; X6 is E or D;
(b) X1 is M, I or S; X2 is L, M or I; X3 is F or M; X4 is I; X5 S or T; X6 is D; or
(c) X1 is S; X2 is I; X3 is M; X4 is I; X5 is T; X6 is D.