Viagra’s design dispute, “Although Pfizer acquired justification…

Over the blue diamond-shape ‘Viagra’s’ design and trademark rights, Pfizer Pharmaceuticals and Hanmi Pharm have had complicated ties on lawsuits.

First of all, there is a trial for injunction against infringement of its design right filed by Pfizer; afterwards Hanmi Pharm counterattacked with 3 lawsuits: a nullity trial for the design right and nullity and revocation trials for the three-dimen...