2000b-209 2006g-440 2014l-911 20thcentury 21stcentury biotechnology business corruptpractices developingcountries distribution drugadulteration drugapproval drugindustry drugs economics genericdrugs genericsubstitution generikum history india industries jurisprudence lawandlegislation legislation medical patentextensions patents patentsastopic pharmaceutical pharmaceuticalindustry pharmaceuticalpreparations pharmacology pharmacy pharmazeutischeindustrie qualitycontrol qv33aa1b415g1999 qv736c496w2005 qv771 standards supply therapeuticequivalency unitedstates worldtradeorganization