“ It thus appears that petitioner has alleged no cause of action unde the Copyright Law and is not entitled to the benefits of registration under the Trademark Law. The only cause of action that this record could possibly support is for unfair competition and common law 'trademark infringement', to which local law applies. See Fashion Guild v. ”

“ The decree will be vacated without costs in this Court to either party, and the cause will be remanded to the Circuit Court of Appeals, to afford it opportunity to apply the appropriate local law, and for such further or other proceedings as in the circumstances may be proper. ”