Pending shareholder and regulatory approvals, Tokyo-based TDK Corp. will buy San Jose, Calif.-based InvenSense Inc. for $1.3 billion in cash, which presents a 19.9 percent premium to the closing price on Dec.20. Once the deal is completed in summer 2017, InvenSense will become a wholly owned subsidiary of TDK.

TDK’s purchase of InvenSense will give TDK more expertise in sensors, allowing the company to expand its product line and technologies. InvenSense’s motion sensors are currently used in smartphones, such as the iPhone, drones, cameras, gaming devices and wearables.

A team of Pillsbury lawyers led by Allison Leopold Tilley advised InvenSense in the transaction. Also on the team were partners Jorge del Calvo, Gabriella Lombardi, Howard Clemons and Nancy Fischer; counsel Christina Pearson and Didi Chow; senior associate Matt Desharnais; associates Gabrielle Grinberg, Justin Krawitz and Matt Rabinowitz; and attorney Paul Thomas.