Here is the language in section 5.1 of the IPR:
<blockquote>Copyright License. Some Contributions may not be subject to copyright. To the extent, however, that a Contribution is or may be subject to copyright, the Contributor hereby grants a perpetual, irrevocable (except in case of breach of this license), non-exclusive, royalty-free, worldwide license in such copyright to the OpenID Foundation, to other Contributors, and to Implementers, to reproduce, prepare derivative works from, distribute, perform, and display the Contribution and derivative works thereof solely for purposes of developing draft Specifications and implementing Implementers Drafts and Final Specifications</blockquote>
Section 6 of the IPR addresses patents, with essentially a promise not to assert.
*[http://harmonyagreements.org/index.html Project Harmony] offers not only a "harmonizing" view of Contributor Agreements, but also the inter-company contributor agreements so that employees of one organization can effectively collaborate on external FOSS projects that the company uses.
*[http://wiki.civiccommons.org/Contributor_Agreements The Civic Commons Wiki] offers a complete run down of CLA and CAA examples
==Is it Viral?==