Thermo Fisher Scientific will acquire Durham-based pharmaceutical-services company Patheon in a deal valued at $7.2 billion, or $35 per share. The price includes the assumption of $2 billion of debt. Patheon, which employs nearly 2,000 in North Carolina, manufactures and packages drugs for biopharmaceutical companies. The company raised $640 million when it went public in June at $21 a share, and the Thermo Fisher deal will generate a 67% profit for shareholders in 11 months. Thermo Fisher is based in Waltham, Massachusetts.