Letter from higher education and library associations to the US Patent and Trademark Office.
- Greenberg v. National Geographic Society: Amicus Brief in support of National Geographic Society
- National Geographic Society v. Greenberg: Amicus Brief in support of National Geographic
- Re: Federal Copyright Protection of Sound Recordings Fixed Before February 15, 1972
- Letter to Julius Genachowski re: A National Broadband Plan for our Future, GN Docket No. 09-51; Preserving the Open Internet, GN Docket No. 09-191 (May 10, 2010)