If you decide to pursue trade secret protection, you should carefully assess how many people other than you already know the secret, and figure out how many more will need to know it. The more people who know the secret, the more likely it is that one or more of them might disclose it to others. Also make sure that those who already have the secret information (and those you plan to give it to) know the importance of keeping the information secret. Allowing the public to use or add to your idea before you patent the invention may preclude you from getting a patent, if you eventually decide to go that route. It may also prevent you from claiming the idea is a trade secret. If your business involves a trade secret, you should require new employees who will have access to the secret information to sign a confidentiality agreement as part of their employment contract. An attorney can assist you with crafting the proper language. If you will need to disclose the trade secret information during discussions with other companies, you should require those companies to sign non-disclosure agreements (NDAs) before the disclosure. These contracts are standard in business, and while the other company may ask to negotiate the terms, few companies will refuse outright to sign them. NDAs tend to expire after a certain time period, so make sure you are comfortable with that. Again, an attorney can help you draft the NDA and may help you negotiate them with the other company.  If another company does refuse to sign an NDA, you should obtain another form of protection for your trade secret (such as a provisional patent application) before disclosing the information. Unfortunately, if you disclose the trade secret information without any protection in place, the other company can use that information, and may even apply for its own patent on that information. This includes both written documents and documents kept electronically. Keep written documents secured and limit the number of copies that may be made. Limit access to...

TL;DR in Vietnamese:
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