In the initial agreement, Microsoft took ownership of approximately 925 U.S. patents and patent applications, in addition to a license to AOL's remaining patent portfolio of about 300 patents. Facebook has now taken possession of 650 of those patents, "plus a license to the AOL patents and applications that Microsoft will purchase and own," Facebook said in a release.
That leaves Microsoft with 275 of the original patents and applications it purchased from AOL. Microsoft will also retain a license to 650 of the patents and applications now owned by Facebook, in addition to the 300 or so AOL patents it gained a license to earlier.
“Today’s agreement with Facebook enables us to recoup over half of our costs while achieving our goals from the AOL auction,” Brad Smith, executive vice president and general counsel of Microsoft, said in the release.