Functional Claiming and Software Patents

Presentation to the 12 February 2013 Software PTO Roundtable at SLS

Santa Clara Univ. Legal Studies Research Paper No. 6-13

42 Pages Posted: 12 Feb 2013 Last revised: 13 Mar 2013

See all articles by Colleen V. Chien

Colleen V. Chien

Santa Clara University - School of Law; Stanford University - Department of Management Science & Engineering

Aashish Karkhanis

Independent

Date Written: February 12, 2013

Abstract

On Feb 12, 2013, the PTO held a roundtable about software patents at Stanford. Software patents have received a lot of attention and we don't believe it is undue: software patents are behind a disproportionate share of patent litigations -- more specifically, over half (55%) of all patent defendants and 82% of PAE ("patent troll") defendants are there because of a software patent, applying the Graham-Vishnubhakat definition to data provided by RPX Corporation. In this presentation, we more rigorously apply 35 USC 112(f) in accordance with the proposal Mark Lemley outlines in his WIRED oped "Let's Go Back to Claiming the Problem Not the Solution" to 30 patents - 10 PAE and 20 control patents, provided by Patent Freedom. We find that 1) PAE patents are overwhelmingly functionally claimed (100%), but non-PAE patents are also functionally claimed (50%), 2) 40%-50% of the PAE patents were only supported by the highest levels of abstraction, but that 3) not all code is created equal - low-level code over generic elements does not necessarily promote technical progress. We provide 5 examples to support these findings, and discuss their implications.

Suggested Citation

Chien, Colleen V. and Karkhanis, Aashish, Functional Claiming and Software Patents (February 12, 2013). Presentation to the 12 February 2013 Software PTO Roundtable at SLS, Santa Clara Univ. Legal Studies Research Paper No. 6-13, Available at SSRN: https://ssrn.com/abstract=2215867 or http://dx.doi.org/10.2139/ssrn.2215867

Colleen V. Chien (Contact Author)

Santa Clara University - School of Law ( email )

500 El Camino Real
Santa Clara, CA 95053
United States
408-554-4534 (Phone)
408-554-4426 (Fax)

Stanford University - Department of Management Science & Engineering ( email )

473 Via Ortega
Stanford, CA 94305-9025
United States

HOME PAGE: http://https://sites.google.com/view/colleenchien/

Aashish Karkhanis

Independent

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