The trademark PONTIAC is expired in Germany. It's registry included text/words. This trademark protected the use rights on jewelry; and vehicles.
The record is owned by Etablissements A. Kinsbergen S.A.; Etablissements A. Kinsbergen, société anonyme; and GENERAL MOTORS LLC.
(Vehicles) Vehicles; apparatus for locomotion by land, air or water. Class 14:
(Jewelry) Precious metals and their alloys and goods in precious metals or coated therewith, not included in other classes; jewelry, precious stones; horological and chronometric instruments.