There is no source on 'paid by microsoft'. The article you linked just links another (dead) article. Please quote original sources, not 'he said she said'
The original source for Microsoft is Mueller: http://www.fosspatents.com/2011/10/study-on-worldwide-use-of...
I elected to not link the first because most people dislike being linked to court documents, and the second because it contains no context. I did check both existed before I posted this.