It's the famous Bitcoin white paper by Satoshi. The linked Ontier press release* quotes Wright's legal team:

>“Dr Wright does not wish to restrict access to his White Paper. However, he does not agree that it should be used by supporters and developers of alternative assets, such as Bitcoin Core, to promote or otherwise misrepresent those assets as being Bitcoin given that they do not support or align with the vision for Bitcoin as he set out in his White Paper.”

They're saying the project bitcoin.org promotes is using the whitepaper dishonestly to promote itself. Which resembles to me a trademark dispute, instead. And usually the trademark or copyright owner has solid proof of ownership.

* https://www.ontier.digital/post/uk-court-awards-bitcoin-crea...