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Patent is only enforceable after it is granted, and only in the jurisdiction where it is granted.
Why?
Patent protection is territorial in nature although Patent filing can be done internationally via international treaties such as Patent Corporation Treaty (PCT) or Paris Convention.
A patent application is only valid if filed before any public disclosure of the invention is made. Any subsequent patent applications can be filed in other countries within 12 months from the filing date. After that 12 months, subsequent patent applications to protect the same invention would be considered invalid because the invention is deemed publicly disclosed.
How Else Can I Protect My Patent?
It depends on that particular national law that allows reinstatement of lapsed patents.
Any adaptation is legally considered as ‘derived work’ and it will still be considered as their work.
What can Happen?
You may be sued for copyright infringement as it is not your original work but a derivative work from copying or modifying without the owner’s permission.