http://www.law.cornell.edu/constitution/constitution.articlei.html#section8
The Congress shall have power [...] To promote the progress of science and useful arts, by securing for limited times to authors and inventors the exclusive right to their respective writings and discoveries;
In the United States, the major intellectual property laws are US Code Title 35--Patents, the Trademark Act of 1946 as amended, and US Code Title 17--Copyrights.
European laws vary by country.
International laws are overseen by the World Intellectual Property Organization, linked below; WIPO is also a good centralized source for links to individual countries' laws.
Copyright: Title 17, the Copyright Act 1976 as amended
Trademark: the Trademark Act of 1946 as amended
Patent: Title 35, Patents
Robert P. Merges has written: 'Intellectual property in the new technological age' -- subject(s): Intellectual property, Technological innovations, Law and legislation 'Justifying intellectual property' -- subject(s): Intellectual property, Philosophy, Intangible property 'Intellectual property in the new technological age' -- subject(s): Intellectual property, Technological innovations, Law and legislation
Yasunori Ohtsuka has written: 'Protecting intellectual property in Japan' -- subject(s): Intellectual property, Patent laws and legislation
James Malackowski has written: 'Intellectual property and financial markets' -- subject(s): Intellectual property, Valuation, Law and legislation, Financial services industry
David R. Gerk has written: 'New practitioner's guide to intellectual property' -- subject(s): Trade secrets, Trademarks, Copyright, Intellectual property, Unfair Competition, Patent laws and legislation, Law and legislation
Daphne Zografos has written: 'Intellectual property and traditional cultural expression' -- subject(s): Protection, Cultural property, Indigenous peoples, Intellectual property, Law and legislation, Legal status, laws
Bernard Sihanya has written: 'Integrating innovation and intellectual property into Kenya's Constitution' -- subject(s): Intellectual property, Law and legislation, Technological innovations, Technology and state
James G. McEwen has written: 'Intellectual property in government contracts' -- subject(s): Intellectual property, Government purchasing, Law and legislation, Public contracts
Mary LaFrance has written: 'Copyright law in a nutshell' -- subject(s): Intellectual property, Copyright 'Intellectual Property, Cases and Materials (American Casebooks)' '2005 Supplement to Intellectual Property, Cases and Materials, Second Edition, 2004 (Supplement)' 'Understanding trademark law' -- subject(s): Law and legislation, Trademarks 'Intellectual Property'
John W. Schlicher has written: 'Patent law' -- subject(s): Economic aspects, Economic aspects of Patent laws and legislation, Patent laws and legislation 'Licensing intellectual property' -- subject(s): Intellectual property, License agreements, Patent licenses
Intellectual property law defines intellectual property rights.
Jeffrey L Ihnen has written: 'Intellectual property protection for plants and varieties' -- subject(s): Cultivated Plants, Intellectual property, Patent laws and legislation, Patents, Plants, Cultivated
William J. Seiter has written: 'The creative artist's legal guide' -- subject(s): Copyright and electronic data processing, Trademarks, Copyright, LAW / Intellectual Property / Trademark, Intellectual property, Law and legislation, Contracts, Fictitious characters, Fair use (Copyright), LAW / Entertainment, LAW / Intellectual Property / General, LAW / Intellectual Property / Copyright, Digital media