Nortel Networks

The buyers of the Nortel patent portfolio are now facing an investigation by the U.S. Department of Justice over how they intend to use the patents they purchased, according to the Wall Street Journal.  Last month, the consortium known as "Rockstar Bidco" -- comprising names like Apple, RIM, Microsoft and Sony -- won the patent auction at a price of $4.5 billion.  The sale was quickly approved by the Canadian and U.S. courts, but the DoJ will now consider what, if any, restrictions should be placed on their use.  According to the WSJ, the DoJ probe (which has not been made public), is specifically asking the winning companies if they plan to use the patents to file suit against manufacturers of Android smartphones.

I think a look at the current situation can answer that. 

Source: Wall Street journal