Recode reported on Microsoft’s lawsuit against Samsung’s breach of contract.

Microsoft’s lawsuit against Samsung was unsealed on Friday, revealing that the software maker believes it is owed $6.9 million in unpaid interest from last year.

Of course, Samsung would not intentionally avoid paying.

A lot is at stake in the case, as is made clear by the details unsealed Friday. Microsoft notes in the suit that Samsung paid it $1 billion last year under the patent agreement.

We already know that Microsoft earns a lot from Android patents.