Abandoned Places Around The World

• Abandonment of trademark
Abandonment of trademark is understood to happen when a trademark is not used for three or more years, or when it is deliberately discontinued; trademark law protects only trademarks being actively used and defended.
• Abandonment of patent
Abandonment is relinquishment by an inventor of the right to secure a patent, in such a way as to constitute a dedication of the invention to public use.