The courts have ruled, even the Spanish Supreme Court... Hispano Suiza's owners exclusive rights to the trademarks have expired

the Supreme Court of Spain finally declared the expiry of the exclusive right to use the trademark 'Hispano-Suiza' by its traditional owners. The reason is that they have not manufactured motor vehicles under their banner nor have they used it in any other automotive industry project in the last 80 years.

The three courts agree that industrial property is not forever, the Mateu family has had the Hispano-Suiza trademark registered so far, but this does not guarantee them the exclusive right to exploit it. For this it is essential to demonstrate activity in the sectors reserved for its use.

http://www.escuderia.com/tribunal-supremo-sentencia-marca-hispano-suiza/