A patent search is a process used to find existing patents that may be similar to an invention or idea. This search helps inventors and businesses determine if their invention is unique and can be patented. It involves searching through databases of issued patents and published patent applications to identify prior art. Conducting a patent search can save time and resources by avoiding potential legal issues. It can also provide insights into existing technologies and market trends. Various tools and databases, such as the United States Patent and Trademark Office (USPTO) and European Patent Office (EPO), are commonly used for this purpose.