UOIP/Chanbond is suing one of the largest broadband companies in the world. List is below with their annual net revenues. There are few others which I left out.
Channel bonding video(CBV) got patent allowance in 2012 so Chanbond could claim royalty on infringement for past five years(2012-2016). If you take 10% as royalty percentage annually.
Total net revenues per year(all companies) = 30 billion
Chanbond could claim 10% royalty on patent infringement = 3 billion per year
Infringment happened for past five years so Chanbond entitled to
3 billion x 5 = 15 billion in royalty payment.
This is past due payments and doesnot include future payments and as Vortmax mentioned the patent life is for 20 years. So they could collect this type of payment in forseeable future.