RT Article T1 Royalties, evolving patent rights, and the value of innovation JF Research policy VO 33 IS 2 SP 179 OP 191 A1 Sherry, Edward F. A2 Teece, David J. 1948- LA English YR 2004 UL https://krimdok.uni-tuebingen.de/Record/1912694204 DO 10.1016/S0048-7333(03)00088-X