Technically, it is possible to patent a new use of an existing product. Realistically, it might not be worth applying because you would have to show that the new use is nonobvious. Even if you believe your use to spectacularly nonobvious, expect an uphill battle.
An ``idea'' cannot be patented. An ``invention'' can be patented. The concept behind the patent system is that for any given invention, the earliest patent wins. However, in terms of the question you are asking, the CLAIMS are the really important part of the patent.
In conclusion, patent protection is possible for previously known drugs being repurposed for new indications. The best chances for patenting repurposed drugs occur when care is given to initial experimentation to establish the usefulness of the drugs and for identifying any unexpected properties of the drugs.
An idea is not tangible and simply it is not possible to patent it. However, as your idea grows into an invention, it might start to fulfil the requirements of a patent. It is possible that it is going to be in high demand after its launch, and therefore attract other creators to copy it.
How to apply for a patent Decide if you have a patent. Decide if a patent is the right type of IP to protect your idea. Search existing patents. Search existing patents to make sure your idea is new and not already registered. Understand costs and timings. File your application. See the outcome.
While it is impossible to patent an existing product, it certainly is feasible to patent an improvement over an existing product. Below we discuss how non-obvious improvements to an existing product can be patented.
Is a different use for an existing product patentable? Technically, it is possible to patent a new use of an existing product.
Patent Protection for New Products A global patent protects innovative features of a new machine or a new product by process claims and product claims. The novel and inventive features of a new product or a new machine therefore require thorough drafting of the patent application.
Patent law defines the limits of what can be patented. For example, the laws of nature, physical phenomena, and abstract ideas cannot be patented, nor can only an idea or suggestion.