Matroska is supported by a non-profit organisation in France (association loi 1901). All official inquiries should go through that association at email@example.com. We can sign Non Disclosure Agreement (NDA) if your project/business requires it. Our address is:
Matroska 25 Chemin de Mounestie F-31840 Aussonne France
Matroska is an open and free technology. Anyone can use it or modify it for their own needs without paying any license or patents.
However the name and the logo may NOT be used freely under some circumstances. This is to ensure that the technology is not devalued by incorrect implementations or defamation. The name and logos may only be used without any permission in non commercial context. For commercial use (reading, writing, extending) we ask that you contact us to make sure we can verify Matroska is used correctly. We do ask that if you derive value from using Matroska that you are invited to sponsor us to promote the use and evolution of Matroska further. You can also make sure that your product(s) meet some minimum requirements by testing with our validator and/or test suites.
The logos and Trademarks are owned by Matroska.