If a company develops a new technology that improves its main product, the most appropriate type of intellectual property they can use to stop others from copying their invention is patents.
Patents protect new inventions or improvements to existing inventions, giving the patent holder exclusive rights to use, sell, or license the invention for a certain period of time (typically 20 years) in exchange for public disclosure of the invention.
The other options, such as registered designs, trademarks, copyright, and geographical indications, serve different purposes and may not provide the same level of protection for a technological invention.