English to French Law/Patents Law: Contract(s)

The agreement will be legally terminated if the licensee has given one or more rights under the terms of this agreement or plants of the varieties to third parties as security in any way, by a lien or otherwise, without the written permission of XXX or its agent for licensee's country;

a donné en garantie ? ou plutôt 'a donné... en guise de garantie' ? quelle est la meilleure formule selon vous ? merci !