Can I find the patent evaluation report of 20 12 listed companies now?

You can't. You can't find the patent evaluation report of 20 12 listed companies. The patent evaluation report must be requested by the patentee or interested party before the National Information Bureau can make it. Anyone who has made a patent evaluation report can consult or copy it, but he must apply and pay a fee. Patent, literally, refers to the exclusive right. The word "patent" comes from Latin Litteraepatentes, which means open letters or open documents. It is a certificate used by medieval monarchs to issue certain privileges, and later refers to the exclusive rights certificate signed by the British king himself.