Samsung disclosed the request for arbitration in Hong Kong Tuesday in Manhattan federal court, in a filing in Microsoft’s lawsuit over a disputed 2011 licensing agreement. The arbitration concerns the calculation of “success credits” under a “confidential business collaboration agreement,” Samsung said.

It wasn’t immediately clear whether the agreement that is the subject of the arbitration request is the 2011 licensing contract.

In its lawsuit, Microsoft claims Samsung breached an agreement to share patents. The seven-year accord required Samsung to pay Microsoft royalties for phones and tablets that use the software maker’s patented technology, according to Microsoft.

Samsung has refused to pay $6.9 million in interest owed under the agreement, Microsoft said.

Microsoft claims Samsung is using Microsoft’s acquisition of Nokia Oyj’s phone business as an excuse to stop complying with the contract. The license agreement contains explicit provisions that grant a patent license to both companies’ subsidiaries, including Nokia, Microsoft said in its complaint.