Legal Monopoly Patents and Antitrust Litigation in US Manufacturing 1970-1998

Working Paper: NBER ID: w7068

Authors: B. Zorina Khan

Abstract: This paper presents an empirical analysis of the relationship between patenting, innovation, and federal antitrust enforcement towards firms in the manufacturing sector. I examine whether the likelihood of antitrust litigation is influenced by patent histories and R&D expenditures, after controlling for other firm-specific variables including size and likelihood of antitrust charges for medium and large firms. Smaller firms with faster sales growth are also more likely to be charged with antitrust violations.

Keywords: No keywords provided

JEL Codes: No JEL codes provided


Causal Claims Network Graph

Edges that are evidenced by causal inference methods are in orange, and the rest are in light blue.


Causal Claims

CauseEffect
technological innovation (patenting and R&D expenditures) (O39)likelihood of antitrust litigation (K21)
firm size and sales growth (L25)likelihood of antitrust litigation (K21)
increased patenting (O34)higher probability of antitrust charges (L49)
smaller firms experiencing rapid sales growth (L25)susceptibility to antitrust charges (K21)

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