Linden Lab Official:Contribution Agreement

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KBcaution.png Important: Please print and fill out the official PDF document to execute this agreement. Follow the submission instructions in the PDF. This wiki version does not include the form fields to fill in; it is provided to make the document more easily accessible (and provides a history of how the agreement changes on the rare occasions when that happens). If you have questions about these terms, please see the associated FAQ, or contact us at

Thank you for your interest in open source projects managed by Linden Research, Inc. ("Linden Lab"). This Individual Contributor Agreement (the "Agreement") clarifies the terms under which You, the person listed below (as further defined below), may contribute software code, documentation, or other material (as further defined below, the "Contribution") to open source projects managed by Linden Lab. This license is for your protection as well as the protection of Linden Lab and its users; it does not change your rights to use your own Contributions for any other purpose.

As of the date You first submitted a Contribution to Desura Pty Ltd. ("Desura") or Linden Lab, even if such submissions preceded the date below, You and Linden Lab accept and agree to the following terms and conditions for: (i) your past Contributions submitted to Desura; and (ii) your past, present and future Contributions submitted to Linden Lab:

  1. Definitions
    (a) "You" or "Your" shall mean the copyright owner or legal entity authorized by the copyright owner that is executing this Agreement with Linden Lab. For legal entities, the entity making a contribution and all other entities that control, are controlled by, or are under common control with that entity are considered to be a single contributor. For the purposes of this definition, "control" means
    (i) The power, direct or indirect, to cause the direction or management of such entity, whether by contract or otherwise;
    (ii) Ownership of fifty percent (50%) or more of the outstanding shares; or
    (iii) Beneficial ownership of such entity.
    (b) "Contribution" shall mean any source code, object code, patch, tool, sample, graphic, specification, manual, documentation, email, comment, posting, original work of authorship, communication or any other material, including any modifications or additions to an existing work, that is or has been intentionally submitted by You to Desura or Linden Lab for inclusion in, or documentation of, the applicable open source projects (as reflected above) owned or managed by Linden Lab, including products formerly owned by Desura (collectively, the "Work").
    (c) "Submitted" shall mean any form of electronic, or written communication sent to Linden Lab or its representatives, including but not limited to communication on electronic mailing lists, source code control systems, and issue tracking systems that are managed by, or on behalf of, Linden Lab for the purpose of discussing and improving the Work, but excluding communication that is conspicuously marked or otherwise designated in writing by You as "Not a Contribution."
  2. Grant of Copyright License.
    (a) You hereby assign to Linden Lab joint ownership in all worldwide, common law and statutory rights associated with the copyrights, copyright applications and copyright registrations in Your Contribution, and to the extent allowable under applicable moral laws and copyright conventions, You agree never to assert against Linden Lab or its licensees or transferees any moral rights therein. 2 You understand that (i) this Agreement may be submitted by Linden Lab to register a copyright in Your Contribution, and (ii) Linden Lab may exercise all rights as a copyright owner of Your Contribution, including enforcement against infringers.
    (b) To the extent any of the rights, title and interest in the copyrights to Your Contribution are not assigned by You to Linden Lab, You hereby grant to Linden Lab and to recipients of software distributed by Linden Lab a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Your Contributions and such derivative works.
    (c) Both You and Linden Lab shall be able to do all such things in relation to Your Contribution as if each were respectively the sole owners of the copyright and all other relevant intellectual property rights therein. Neither party has any duty whatsoever to consult with, obtain the consent of, pay or render an accounting to the other party for any use or distribution of a Contribution or derivative work thereof.
    (d) You hereby acknowledge and agree that Linden Lab may include Your Contribution in the Work under any license, including copyleft, permissive, commercial, or proprietary licenses; provided however, that Linden Lab agrees to license your Contribution, in perpetuity, under the terms of the license(s) which Linden Lab is using for the Work as of the date of this Agreement (as reflected below) or the LGPL v2.1 license, in Linden Lab’s discretion.
  3. Grant of Patent License. You hereby grant to Linden Lab and to recipients of software distributed by Linden Lab a perpetual, worldwide, non-exclusive, no- charge, royalty-free, irrevocable (except as stated in this section) license under any patents owned by or licensable by You at any time without payment to third parties, to make, have made, use, offer to sell, sell, import, and otherwise transfer Your Contribution, in whole or in part, alone or in combination with or included in the Work, and to sublicense the foregoing rights to third parties through multiple tiers of sublicensees or other licensing mechanisms at Linden Lab’s option.
  4. To the extent any of the rights in and to the copyrights and patents covering the Contribution can neither be assigned nor licensed by You to Us, You irrevocably waive and agree never to assert such rights against Linden Lab, any of our successors in interest, or any of our licensees, either direct or indirect.
  5. Except as set forth above, You retain all right, title and interest in and to Your Contribution and may use Your Contribution for Your own purposes.
  6. You represent that each of Your Contributions is Your original creation. You represent that Your Contribution submissions include complete details of any third-party license or other restrictions (including, but not limited to, related patents and trademarks) of which you are personally aware and which are associated with any part of Your Contributions.
  7. You agree to notify Linden Lab of any facts or circumstances of which you become aware that would make these representations inaccurate in any respect.
  8. Entire Agreement. This Agreement sets forth the entire understanding between you and Linden Lab regarding your Contributions and supersedes any and all prior or contemporaneous agreements, arrangements or understandings relating to the subject matter hereof, written, oral, or otherwise.