Who owns the trademark? Arbitrum: Offchain Labs, Inc. Optimism: Optimism Foundation Aave: Quantum Swan OÜ MakerDAO: DAI Fonden USDS: Moonbow Foundation Uniswap: Universal Navigation, Inc. USDT: Tether Operations, S.A. De C.V. USDe: Circle Internet Financial Limited; Castor Pollux Holdings S.a.r.l. (Interesting that both Circle and Paxos have registered USDe or USDE)

People asked about Solana and Ethereum. Both owned by their Foundations

Arbitrum: This actually was transferred to the Arbitrum Foundation. Offchain Labs was the original registrant, it looks like.