The Securities and Exchange Commission overstepped its authority when it classified Coinbase-listed cryptocurrencies as securities, the exchange has argued in its final bid to dismiss a lawsuit by the securities regulator.

In an Oct. 24 filing in a New York District Court, Coinbase chastised the SEC claiming its definition for what qualifies as a security was too wide and contested that the cryptocurrencies the exchange lists are not under the regulator’s purview.

“The SEC’s authority is limited to securities transactions. Not every parting of capital with a hope of gain qualifies, and trades over Coinbase are only securities transactions if they involve ‘investment contracts.’ The transactions at issue here do not."

Coinbase claimed the SEC has undertaken a “radical expansion of its own authority” and claimed jurisdiction “over essentially all investment activity” which only Congress is entitled to do under the major questions doctrine.