Enter a company's trade name or an individual's name to search for patent ownership across 100+ PTOs from 1976 (or earlier) to this day. Are you looking for data that tell if the companies or persons you look into own any patents? If they do, do you want to know how many patents they own? The Assignee Query Data will provide you with a timely and comprehensive result of global patent ownership of the companies or individuals with the history of 50 years. How do we do that? We include decades’ worth of global full-text databases, such as the US, China, EM/EUIPO, Japan, Korea, WIPO and so on, and keep them updated on a timely basis—as frequently as every day or week, depending on the sources. Furthermore, the data downloaded are cleansed to minimize data errors and thus search and analysis errors. For example, we standardize assignee names to enables individual patents to correspond to a single owner; logic-based corrections ensure that values are corrected based on rules. In addition, we use advanced algorithms in analyzing, selecting, and presenting the most current and accurate information from multiple available data sources. For instance, a single patent’s legal status is triangulated across different patent data for accuracy. Moreover, proprietary Quality and Value rankings put patents in each key market under the equally evaluative process, offering subjective predictions for the patent's likelihood of validity and monetization.