A new report by IP Offerings has compiled a list of the publicly available US patent sales from 2012.

The total value of the 35 patents listed neared $3 billion, with the average sale price of each patent recorded as $373,573. The median selling price per patent was $220,588.

However, it is believed that the vast majority of such transactions are not made public.

Patent law is a financially robust industry. You can read about typical salaries for Patent Attorneys here.