Cryptocurrency exchange Coinbase has submitted documents seeking permission to assist Ripple Labs in its ongoing legal battle with the US Securities and Exchange Commission (SEC).

US cryptocurrency exchange Coinbase has become the latest organization behind Ripple Labs in its legal battle against the authority, which could end as soon as the first half of 2023, according to Coin Telegraph.

Paul Grewal, Coinbase's chief legal officer, said in a series of tweets on Oct. 31 that the exchange is asking the chief justice for permission to file an amicable brief, saying the case was a written definition of how important fair notice is.

A friendly brief, commonly known as a friend of the court, is a legal document that contains advice or information regarding a court case from an organization or individual not directly involved in the case.

Grewal explained that the primary protection under the US Constitution is that authorities cannot condemn conduct as a violation of the law without giving fair notice that the conduct is unlawful.

He added that by suing XRP token sellers after making public statements that these transactions were legal, the SEC has lost this basic principle.

If approved, Coinbase will join the ranks of the nonprofit Investor Choice Advocates and the SpendTheBits mobile app, which was granted permission to submit Friend Briefs in October.