Well, a trademark refers
to any kind of unique mark that represents your trade. A trademark can be anything from a word mark, logo or
unconventional marks. A signature is going to come under logo. To that end,
yes, you can trademark your signature.
If you need any evidence
to know that this is fact, you can look into the signatures of John Hancock,
Taylor swift, John Lennon, Shahrukh Khan or Sachin Tendulkar. These celebrities
have gotten their signatures trademarked.
However, as you can
guess, most of them are celebrities with the brand being, well, they themselves
are a brand. To that end, make sure that whatever you do is a significant brand
before opting for this.
