Copyright only protects the expression of an idea, but a patent protects the idea itself (assuming it's an invention or process). You can write about, paint, or take a picture of a machine, but anyone can build it and sell it. But if you patent it, you have the exclusive right to build and sell it.
You cannot copyright a product. You may patent an invention that is "new and non-obvious" if you file the necessary application and have it examined and approved. You should expect to pay about $10,000 for a patent in the USA.
If by "script" you mean "screenplay", you can't get a patent on it. You should be trying to get a copyright. Technically, if your script has been written, it's already protected by U.S. copyright law. Once any original work of authorship is fixed into any tangible medium (in this case, once it's written down), it is protected by copyright. However, to get many substantive protections, you should register your work with the U.S. Copyright Office (see related links). For clarification, you can also see the related links for explanations of the difference between copyright and patent.
In the US, since copyright law was amended in 1989, it has not been necessary to display a copyright notice for protection.
The copyright symbol is a C in a circle, ©, but it should be mentioned that notification is not required for protection.
Violating copyright is a federal crime, punishable by fines up to $250,000. Also, the intent of copyright protection is to encourage creation of new works.
You would want trademark protection rather than copyright protection. The trademark office of the country in which you wish to do business should have information online, and may have an online application process.
To file for copyright protection for your work, you need to submit an application to the U.S. Copyright Office. This application should include a completed form, a copy of your work, and the required fee. Once your application is processed and approved, your work will be officially copyrighted, providing you with legal protection against unauthorized use or reproduction.
Facts which are not considered common knowledge should be cited, regardless of copyright. Wikipedia articles, for example, should still be cited.
A notification. It should be mentioned that notification is not required for protection.
To ensure your work is protected under copyright law, you should create the work in a tangible form, such as writing it down or recording it. You should also include a copyright notice with your name, the copyright symbol , and the year of creation. Consider registering your work with the U.S. Copyright Office for added protection.
Sure. Although a copyright notice is not required for protection, it usually takes the form of the copyright symbol, the year of creation or publication, and the name of the rightsholder. For an example, see the bottom of this page.
If you want to obtain copyright protection for your work in another country, you may need to comply with the copyright laws of that specific country. You should consult with an intellectual property attorney or do thorough research on the copyright laws of that country to ensure that you follow the necessary procedures to obtain copyright protection. Additionally, it is generally a good practice to register your copyright with the copyright office in each country where you seek protection.