definiens: means any products the making, selling, using or importing of which is covered by aValid Claim of a Licensed Patent Right and is ( i ) an ALK-1 Receptor Product ; ( ii ) an ALK-1 Antibody Product ; ( iii ) an ALK-2Receptor Product ; ( iv ) an ALK-3 Receptor Product ; ( v ) an ALK-3 Antibody Product ; ( vi ) an ALK-4 Receptor Product ; ( vii ) anALK-4 Antibody Product ( viii ) an ALK-5 Receptor Product ( ix ) an ALK-5 Antibody Product ; ( x ) an ALK-6 Receptor Product;(xi ) an ALK-6 Antibody Product ; provided, however, that any product that ceases to be a “ Licensed 4 THIS EXHIBIT HAS BEEN REDACTED AND IS THE SUBJECT OF A CONFIDENTIAL TREATMENTREQUEST