How to apply for a utility patent for an invention in US?
What is the procedure of this process?
What are any other important details?
Can a US base technology patent be extend to EU?
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Assumption: A technology based patent application will be submitted to United States Patent and Trademark office (USPTO).
You need first investigate prior art. Essentially you have to validate if your invention is truly an invention. There few ways you can achieve this task.
Do a local and international patent search? You can start with google patent. Do a patent search using United States Patent and Trademark office (USPTO) search tool. (Warning: This is a very painful process)
Develop an invention disclosure
Patent Lawyers will further investigate your invention. If they determine that your invention is valid then they will file a patent application. At this point USPTO will communicate with your lawyer to further validate your patent. If USPTO is satisfied your invention then they will granted the patent. You can now really celebrate :-)
Note: This is everything that I know.
If you want to apply for a patent on your own, just forget, don't even waste your time. If you have an affiliation, say, a university then they would take care of bureaucratic questions and fees. Usually, a university has an office that deals with patent applications and has its own application forms (which are no match to the actual patent application when it comes to writing effort!). You need to convince them first that your invention is worth a patent application. For that, you need to do an extensive literature (especially patent) review and clearly identify which of your ideas are actually novel. Then you can apply to your patent office.