That depends on the kind of business activity the company would be carrying out. Activities pertaining to healthcare, dentistry or architecture require a license, and those in banking, insurance or aviation require special permission, before they can be formed.
Although people can choose from among several types of companies for incorporation in the US, the most commonly preferred types are limited liability companies (LLCs) and corporations.
Yes, a foreigner can own a company in the United States. The procedure for a foreign citizen to form a company in the US is the same as that for a US resident.
Depending upon the type of business structure you choose and state you form your business in, it can take anywhere from 1 day to 4 weeks to incorporate a company in the US.
In the USA, a company can patent its idea by applying for a utility, design or plant patent at the United States Patent and Trademark Office (USPTO).
In the USA, if there is a dispute between two parties over a trademark, whoever used it first commercially shall own its right, even if they did not register it first. One can trademark a name (that has not already been trademarked) by registering it at the USPTO.
In the USA, one can register for the protection of copyright through the Copyright Office. The registration of copyright is not compulsory but is required if one wants to file a lawsuit for the infringement of copyright.