Filing for a Patent Versus Keeping Your Invention a Trade Secret
Harvard Business Review
NOVEMBER 21, 2013
Wyeth, a pharmaceutical acquired by Pfizer in 2009, was the sole supplier of Premarin. A series of patents were issued on the drug in the 1940s, but long after they had expired, there were still no generic competitors on the market. Insiders know it as Merchandise 7X. 174,465, the most valuable patent in history.
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