Patent attorney serves as counsels to corporations or individuals. Patent attorney helps determine if the invention is patentable. Patent attorney does this by evaluating the invention. Depending on the result of the evaluation, patent attorney advises the client as to whether a patent application should be filed on the invention. During the evaluation phase, patent attorney conduct in-depth investigation into the technical field involved, including study of the closest prior patents and references and a comparison with the invention to identify differences.

Patents for sale are patent rights granted to an inventor that are being sold in public. Patents for sale companies specialize in allowing companies and individuals to buy or sell ideas, new inventions and patents as well as art, crafts and other intellectual properties. Patents for Sale companies provide a link of the innovators with investors and manufacturers as well as agents, galleries and publishers who have the resources to market new ideas and talents at the worldwide level.

These companies that offer patents for sale can help leverage the massive reach of the global network, and promote the innovation and talent to the worldwide intellectual property transfer market which is now estimated to be worth over $100 billion.