Professors hired lawyers to turn their names into trademarks to sell brand . Comment: Hawking has also applied to trademark his name for charitable purposes . Join ranks of other celebrities to have done so , such as David Beckham .
Professors hired lawyers to turn their names into trademarks to sell brand . Aims to prevent others exploiting their name with inappropriate products . Hawking has also applied to trademark his name for charitable purposes . Join ranks of other celebrities to have done so , such as David Beckham .