Phone tuning company Paratek Microwave exits after raising an estimated $91.4m in its history.

Paratek Microwave, a phone tuning company backed by STMicroelectronics, has been sold to Canada-based handset maker Research in Motion for an undisclosed sum.

Investors in Paratek were venture firms Polaris Ventures; Morgenthaler Ventures; Novak, Biddle, and ABS Ventures, Grande Ventures, New Markets Venture Partners as well as Sweden-listed Investor,Russia-based private equity firm S-Group Capital Management and the CIA’s quasi corporate venturing unit In-Q-Tel. The company has raised an estimated $91.4m in its history.

Paratek raised $20m in 2008, according…