Apple and Google have been fighting it out over patents ever since Android devices went on sale. Until today, that involved more than 20 ongoing lawsuits (in the US and Germany) between the two technology behemoths. In a joint statement earlier today, Apple and Google have announced all that is over. They will be ending the patent cases and will instead work to reform patent law.
This certainly sounds great, but it's probably not as significant as you're imagining.