Editing Digital Negative (section)

== Patent status ==
In 2004, Adobe published a "patent license" for DNG that allows everyone to exploit DNG,<ref name = "DNHlicense">{{Citation | publisher = Adobe | contribution-url = https://www.adobe.com/products/dng/license.html | title = Digital Negative (DNG) | contribution = Specification Patent License|date=2005}}</ref> on the condition that the licensee prominently displays text saying it is licensed from Adobe in source and documentation, and that the license may be revoked if the licensee brings any patent action against Adobe or its affiliates related to the reading or writing of files that comply with the DNG Specification. The license does not name any patent linked to DNG, however.<ref>{{Cite web|url=https://helpx.adobe.com/photoshop/digital-negative.html#dng|title=Digital Negative (DNG)|publisher=Adobe Systems Incorporated.|access-date=2018-07-30}}</ref>

In 2009, Adobe states that there are no known intellectual property encumbrances or license requirements for CinemaDNG, a superset of DNG.<ref name="CinemaDNGnoencumbrance"/> Adobe also stated that if there were a consensus that DNG should be controlled by a [[Standards organization|standards body]], they were open to the idea.<ref name = "DMDkevinconnor">{{Citation | newspaper = Digital Media Designer | url = http://mediadesigner.digitalmedianet.com/articles/viewarticle.jsp?id=28283 | publisher = Digital Media net | title = Adobe's Kevin Connor Speaks on Adobe's DNG Specification | access-date = 2009-09-20 | archive-url = https://web.archive.org/web/20151208052412/http://mediadesigner.digitalmedianet.com/articles/viewarticle.jsp?id=28283 | archive-date = 2015-12-08 | url-status = dead }}.</ref> Even though the "patent license" now grants rights for no known patents, Adobe has not removed the patent license: as of August 2023, it remains on the Adobe website.<ref name = "DNHlicense"/>