Innovation, Governance and the Institutional Environment
Edited by Birgitte Andersen
Chapter 7: The Determinants of Patentees’ Use of ‘Continuation’ Patent Applications in the United States Patent and Trademark Office, 1980–99
7. The determinants of patentees’ use of ‘continuation’ patent applications in the United States Patent and Trademark Office, 1980–99 Stuart J.H. Graham ABSTRACT This chapter describes and examines the use of the ‘continuation’ patent application procedure available in the United States but not generally elsewhere in the world. The continuation procedure allows a US patent applicant to postpone the issue of a patent, affording inventors several strategic opportunities, among which are delay and secrecy. The chapter also demonstrates the perverse effects of so-called ‘submarine patents’, continuation patents that surface in a marketplace in which the patented technology has been widely embraced by adopters unaware that a valid patent was pending and hidden from view. In addition to examining several speciﬁc cases of submarine patents – cases in which the patentee was able to extract extraordinary economic rents – the chapter investigates through negative binomial regression the determinants of patentees’ use of the continuation procedure. Continuations are shown to be signiﬁcantly more likely when the resulting patent is held by an organization, is held by a domestic (US) entity, is comprised of more patent claims, or is drawn from a wider breadth of technologies. The chapter also examines how and why innovators in the semiconductor and pharmaceutical technologies have employed the continuation patent application procedure, demonstrating that in each of these important sectors the continuation procedure has been widely used, and may offer strategic beneﬁts. Keywords: Patents, Submarine patents, Patent continuation applications, Intellectual property strategy 215 216 The performance...
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