The keyword search runs through patent applications previously submitted to the World Intellectual Property Organization. It is open to applicants whether they indicate a person or a patent law firm as a representative in the registration documents. Thus, it is possible that both natural and legal persons are listed in the results.
These representative have been broadly categorized. As far as possible, the representative names were also harmonized. But it cannot totally be inhibited, that firms are mentioned several times because patent law firm names have changed.