Any unauthorized use of patented technology, product or process is termed as patent infringement. In case of patent infringement a patent infringement warning letter is sent to the infringer, and he is patent faq asked to desist. However, if he continued to infringe, a suit for patent infringement can be filed against the person.

If the person is found guilty of patent infringement, he is liable to pay damages and may also be fined. Sometimes the fines imposed are very large and in such cases they are intended to be punitive damages.