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Can anybody patent a product that you have been manufacturing for over thirty years?
Updated: 8/20/2019
Wiki User
∙ 11y agoBest Answer
No, for several possible reasons.
- A product is not patented - an invention is patented.
- Only a "new and non-obvious" invention can be patented.
- A patent expires, usually in 20 years from its initial filing date.
- Once a patent has been published or a product used in public, the invention is no longer considered "new" in most countries and can never be patented by anyone else.
- If a patent was not filed within one year of public use or sale (in the USA), the rights to any patent on the invention are forever waived.
- After a patent expires, the invention becomes public domain.
- There is no way to "renew" any expired patent.
- Only the original inventor of an invention can file for a patent.
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∙ 11y agoThis answer is:
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