This paper investigates the relationship between organizational aging and i
nnovation processes to illuminate the dynamics of high-technology industrie
s, as well to resolve debates in organizational theory about the effects of
aging on organizational functioning. We test hypotheses based on two seemi
ngly contradictory consequences of aging for organizational innovation: tha
t aging is associated with increases in firms' rates of innovation and that
the difficulties of keeping pace with incessant external developments caus
es firms' innovative outputs to become obsolete relative to the most curren
t environmental demands. These seemingly contradictory outcomes are intimat
ely related and reflect inherent tradeoffs in organizational learning and i
nnovation processes. Multiple longitudinal analyses of the relationship bet
ween firm age and patenting behavior in the semiconductor and biotechnology
industries lend support to these arguments.(.)