Filing for a Patent Versus Keeping Your Invention a Trade Secret
Harvard Business Review
NOVEMBER 21, 2013
For many years, beginning in 1942, Premarin was the only hormone replacement therapy drug on the market derived from a natural source. 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.
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