The Marvell Technology Group and Marvell Semiconductor Inc. will pay $750 million to end a long-running patent dispute with Carnegie Mellon University, the university announced on Wednesday. Carnegie Mellon sued in 2009, alleging that the company had infringed a pair of university patents based on the work of a professor and a former student. In 2012 a federal jury awarded the university more than $1 billion in damages, but the case has been through several rounds of appeals since then. Subra Suresh, Carnegie Mellon’s president, said in a letter to the campus that the university would receive $250 million after the inventors of the technology had received their portions of the settlement and legal expenses had been paid.