FDAnews
www.fdanews.com/articles/120653-impax-confirms-patent-challenge-relating-to-oracea

Impax Confirms Patent Challenge Relating to Oracea

September 21, 2009
Impax Laboratories, Inc. confirms that it has initiated a challenge of the patents listed by Galderma Laboratories, L.P. in connection with its Oracea (doxycycline) delayed-release capsules, 40 mg.
Forbes