Hanmi is defeated in revocation trial of Viagra’s ‘blue diamond shape’ patent
The Viagra’s blue diamond shape was recognized to be exclusively used by Pfizer.
The 4th Court of the Patent Court announced, on the 25th, the revocation of the exclusive use right of the Viagra’s blue diamond shape filed by Hanmi Pharm was ruled against the plaintiff.
Hanmi Pharm argued Viagra...
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