Tangerine is described as open source software, yet also as a registered trademark. If the trademark is protected, doesn't that mean Tangerine is not open source?

Software can be both open source and protected by trademark.  While we are proud to share the source code of Tangerine under the GNU General Public License, we care about the use of the Tangerine name and the attribution of the brand.  Having the name and logo of "Tangerine®" protected by a registered trademark gives us the ability to ensure that any assessment & survey software bearing that name and using that logo meets a standard of quality that will uphold the integrity of the product. 

For a more detailed explanation on the intersection between open source software and trademark protections, please see 


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