Abstract
PurposeTo investigate the relationship between technological diversification and firm performance as a function of varying levels of technological coupling and internal technological change.Design/methodology/approachA longitudinal study of US-based bio-pharmaceutical companies.FindingsTechnological diversification improves invention performance. However, high levels of technological coupling reduce this effect.Practical implicationsFirms with highly diversified technological portfolios should strive to keep their technologies at low levels of technological coupling.Originality/valueThis is the first study to show that technological coupling reduces the positive effect of technological diversification on firms' invention performance.
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