Acacia Research announced first quarter 2013 financial results on April 18th. Acacia reported $77 million in revenue and 29 new license agreements. By comparison, during the first quarter 2012 Acacia reported $99 million in revenue and 40 license agreements. Acacia also spent $4 million during the first quarter to acquire nine new patent portfolios.  (Last year, Acacia spent over $300 million on acquisitions.) Acacia acquired two energy portfolios, a medical device portfolio and six additional technology portfolios including one from Rambus related to display technologies. Expenses related to inventor royalties, legal fees and patent amortization costs each increased by more than 100% during the first quarter of 2013 as compared to the prior year period. These expenses totaled $55 million during the first quarter of 2013 as compared to $20 million during the first quarter of 2012. As of March 31, 2013 Acacia had generated licensing revenues from 154 different technology licensing and enforcement programs.