It's not particularly useful once your company is going, but investors like to see that your IP is exclusive and protected. It's still probably not worth the mo

It's not particularly useful once your company is going, but investors like to see that your IP is exclusive and protected. It's still probably not worth the money to pay a lawyer to write it, but you can file a patent or provisional patent yourself for next to nothing. Check out the Nolo Press books on the topic.