Defensive Patent License

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The Defensive Patent License (DPL) is a patent license proposed by Jason Schultz and Jennifer Urban, directors of the Samuelson Law, Technology & Public Policy Clinic at the University of California, Berkeley as a patent licensing equivalent of the GPL copyright license. [1] [2] [3]

It requires entities licensing their patents under the DPL to license all of their patents under the DPL, with free licenses granted to all other DPL participants. [4] DPL participants remain free to launch patent lawsuits against non-participants.

DPL 1.0 [5] was published on November 16, 2013, and a "birthday" celebration held at the Internet Archive. [6] The Internet Archive was designated as the fiscal umbrella organization until it has its own non-profit entity. It was launched on February 28, 2014 at a conference in Berkeley. [7]

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Free software Software licensed to preserve user freedoms

Free software or libre software, infrequently known as freedom-respecting software, is computer software distributed under terms that allow users to run the software for any purpose as well as to study, change, and distribute it and any adapted versions. Free software is a matter of liberty, not price; all users are legally free to do what they want with their copies of a free software regardless of how much is paid to obtain the program. Computer programs are deemed "free" if they give end-users ultimate control over the software and, subsequently, over their devices.

Freeware is software, most often proprietary, that is distributed at no monetary cost to the end user. There is no agreed-upon set of rights, license, or EULA that defines freeware unambiguously; every publisher defines its own rules for the freeware it offers. For instance, modification, redistribution by third parties, and reverse engineering are permitted by some publishers but prohibited by others. Unlike with free and open-source software, which are also often distributed free of charge, the source code for freeware is typically not made available. Freeware may be intended to benefit its producer by, for example, encouraging sales of a more capable version, as in the freemium and shareware business models.

MIT License Permissive free software license

The MIT License is a permissive free software license originating at the Massachusetts Institute of Technology (MIT) in the late 1980s. As a permissive license, it puts only very limited restriction on reuse and has, therefore, high license compatibility.

Apache License Free software license developed by the ASF

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Open-source software Software licensed to ensure source code usage rights

Open-source software (OSS) is computer software that is released under a license in which the copyright holder grants users the rights to use, study, change, and distribute the software and its source code to anyone and for any purpose. Open-source software may be developed in a collaborative public manner. Open-source software is a prominent example of open collaboration, meaning any capable user is able to participate online in development, making the number of possible contributors indefinite. The ability to examine the code facilitates public trust in the software.

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Open source is source code that is made freely available for possible modification and redistribution. Products include permission to use the source code, design documents, or content of the product. The open-source model is a decentralized software development model that encourages open collaboration. A main principle of open-source software development is peer production, with products such as source code, blueprints, and documentation freely available to the public. The open-source movement in software began as a response to the limitations of proprietary code. The model is used for projects such as in open-source appropriate technology, and open-source drug discovery.

References

  1. Julie Bort (2010-05-07). "The Defensive Patent License makes patents less evil for open source". Network World.
  2. Florian Mueller (May 17, 2010). "Will the Defensive Patent License be able to make patents 'less evil' for Free and Open Source Software?". FOSS Patents.{{cite web}}: |author= has generic name (help)
  3. Schultz and Urban (May 10, 2011). "A Defensive Patent License Proposal". Stanford Center for Internet and Society/YouTube. Archived from the original on 2021-12-15.
  4. Jon Brodkin (June 12, 2012). ""Defensive Patent License" created to protect innovators from trolls". Ars Technica.
  5. "License".
  6. "Birthday of the Defensive Patent License: Friday, Nov 15, 4:30-8:00 in SF". November 15, 2013.
  7. "DPL FAQ".

See also