If a patented invention is used, sold, transferred or imported without any permission from the patented owner, it is considered as a crime under Patent Infringement Law. As patents are valid only in territorial boundaries and not valid in other countries, then the infringement is only possible only in that country where patent is in force. Patents are generally referred as claims that prohibit other persons, besides inventor, to use, sell, import or transfer the patented invention. So, before using, selling or importing any patented invention, one should take permission from the owner to avoid any kind of infringement regarding the patent.