Big Tech winning battle with patent trolls

But now the trolls are in retreat from the tech titans, interviews and data reviewed by Reuters show.

In the wake of several changes in U.S. law, which make it easier to challenge software patents, patent prices are plummeting, the number of court fights is down, and stock prices of many patent-holding companies have fallen. Some tech firms say they are punching up research budgets as legal costs shrink, while support for major patent reform is under fire as trolls get trounced.