← Search American Economic Review Vol. 72 No. 3 1982 Preemptive Patenting and the Persistence of Monopoly Richard J. Gilbert; David M. G. Newbery Volume72 Issue3 Pages514-526 Sources bibtex:phds-export.bib Cite APA 7 MLA 9 Chicago (author–date) Harvard Elsevier Harvard (JFE, JBF…) The Accounting Review Academy of Management American Marketing Association INFORMS (Management Science) Copy citation Copied ✓