USPTO: un taux de 54% d’acceptation de demandes de brevets

Selon l’article suivant de ipFrontline, il est difficile de conclure absolument qu’il est devenu plus difficile d’obtenir un brevet aux États-Unis, mais les tendances sont là:
http://www.ipfrontline.com/depts/article.asp?id=13796&deptid=5

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