Kevin E. Flynn's answer First it is important that you do NOT have any public use of your invention or prototypes. There is a razor thin exception for necessary testing but you should consult with a patent attorney before engaging in any public testing.
Second it is important that you do not have any sale of the device outside of a Non-Disclosure Agreement. A public sale ruins your option for a patent in the US and most other places. There is some small risk that a non-public sale ruins your options in the...
Peter D. Mlynek's answer If you are asking about US Patent No. 7,877,903, then the answer is that the patent protects only certain types of interchangeable shoe-forming assemblies.
(The way that you tell is by looking at the patent claims at the end of the patent. The field of invention is not really useful in helping you find what the patent protects, because it is generally much broader that the claims.)
Joseph Jaap's answer The court could consider that. Use the Find a Lawyer tab to retain a local family law attorney who can review all the facts of the situation and advise you. If the father is not paying child support, you can file in court to make him start paying.
Joseph Jaap's answer If you leave, you could end up in juvenile detention, and the people you stay with could get into trouble. Ohio does not recognize emancipation. Here is a link to more information:
Peter D. Mlynek's answer You do not need to actually construct your invention to get a patent. You can simply describe it in a way that it is sufficient for someone else who is knowledgeable in the field to follow your description to actually construct it.
But there is a bigger issue at play here. There are certain things which you cannot get a patent on. One of those is mathematical formulas. Your invention needs to be a little bit more than just an algorithm. See Alice v. CLS Bank
(1) A proof of concept is usually obtained by performing research on the product or service that you want to put onto the marketplace. The type of questions that are being investigated are: “Will this product sell?”, “Can we make money on this?”, “How can we market it?”, “What sales channels should we use?”, “Does the product work?”, “How do we manufacture it?” The point of...
Adam Studnicki's answer Depends who owns the patent and if the product is marketable. Talk to a local patent lawyer.
Please Take Notice: I am not your lawyer unless we enter into an engagement agreement in writing. This is general information that is given for legal education only. It is not legal advice, and it may not work for your specific situation. It is impossible to evaluate a legal problem without a comprehensive consultation and review of all the relevant facts and documents. I strongly encourage you...
Paul Overhauser's answer Assuming you never signed an agreement with WalMart stating that you would assign inventions to them, it is very unlikely that WalMart has a claim on your invention. Except in instances where there is an agreement, or a particular employee was "hired to invent," the employee, not employer, owns rights to inventions made.
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