|By region / country| |By subject matter| |Intellectual property
law| |Sui generis rights| Patent infringement is the commission
of a prohibited act with respect to a patented invention without
permission from the patent holder. Permission may typically be
granted in the form of a license. The definition of patent
infringement may vary by jurisdiction, but it typically includes
using or selling the patented invention. In many countries, a
use is required to be commercial (or to have a commercial
purpose) to constitute patent infringement. The scope of the
patented invention or the extent of protection is defined in the
claims of the granted patent. In other words, the terms of the
claims inform the public of what is not allowed without the
permission of the patent holder. Patents are territorial, and
infringement is only possible in a country where a patent is in
force. For example, if a patent is filed in the United States,
then anyone in the United States is prohibited from making,
using, selling or importi