Patent,  under  the  Act,  is a  grant from  the Government  to the inventor  for a limited period of time, the exclusive right to make use, exercise and vend his invention.  After the  expiry  of the  duration of patent, anybody can make use of the invention.   Patent Act may be  called the Patents Act, 1970. It extends to the whole of India. It shall come into force on such date as the Central Government may, by notification in the Official Gazette, appoint.   Provided that different  dates  may be  appointed for different provisions of this Act, and any reference in any such  provision to the  commencement of this Act shall be construed as a reference to the coming into force of that       Invention is any new and useful :       • Art, process, method or manner of manufacture.     • Machine, apparatus or other article.     • Substance produced by manufacture and.     • Includes any new and useful improvement of any of them, and alleged invention.       Therefore an  invention is  the creation  of intellect applied to  capital and labour, to produce something new and useful. Such creation becomes the exclusive property of the inventor on grant of patent.       Information Required :       • Full names and addresses of Applicant as well as Inventor.     • Details of Convention  Priority, if any- first filed country, filing number and date; the term of priority is one (1) year. [Application under the PCT route available.]       Documents Required :       • Power of Attorney (neither notarization nor consular legalization required) to be executed by an individual or a representative of a corporation.     • Certified copy of the application which is the basis of the Convention priority (if applicable) - may be filed within 6 months from the first filing date.     • Specifications of Invention including claims and abstract Drawings-prepared in triplicate.size-A4.