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copyright's Pill and Big Pharma: A Risky Opportunity?

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The story of Viagra, and its creator copyright, presents a intriguing case study for investors. At first a blockbuster drug, producing billions in income, its patent expiration created a flood of knock-off https://social4geek.com/story7099592/sildenafil-and-big-pharma-a-precarious-opportunity

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