Intellectual Property Rights(IPR), makes Proprietor’s Invention (Brandname, Logo, Document, Audio-Visuals) secure, and no one can use the same when owned the IPR of that invention. It creates an Intangible Assets which can be sold, assigned or leased. Even the smallest idea moves the world, it’s needs a Protection from the Copycat’s.
For a Franchise Business Model, or to Sell the Product via Ecommerce Platform (Amazon, Flipkart), a Trademark Registration is must. Without it you cannot Do it.
If you’re the 1st innovator, and you don’t secure it and other person (2nd innovator) secures and gets the rights of that Intellectual Property then, 2nd Innovator may ask you to stop using that particular innovation legally and you have to. Afterall “Ownership is King”