MEMORANDUM DECISION
CHIN, District Judge.
In this action, Pfizer Inc. ("Pfizer") alleges that Perrigo Company and L. Perrigo Company (together, "Perrigo" or "defendants") infringed upon its patent and trade dress rights pertaining to its Plax® pre-brushing dental rinse product. Perrigo now moves for summary judgment on the patent infringement claims on the ground of patent invalidity. For the reasons discussed below, the motion is denied.
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