Q: We had applied a patent before many years ago by Mitsubishi Could you please help me for what happened

A: To find out the status of a patent application submitted through Mitsubishi or any other entity, you have several options to explore. Initially, you can check the public databases provided by patent offices, such as the United States Patent and Trademark Office (USPTO) in the U.S. or the World Intellectual Property Organization (WIPO) for international patents. These databases allow you to search for patent applications and granted patents by applicant name, patent number, or other relevant criteria.

If the patent was applied for many years ago, it's possible that the application has either been granted, is still pending, or was not approved. Patent applications and their statuses are typically public record, so if you know the patent application number or the exact title of the invention, you can directly search for it in the database. This search will provide you with detailed information about the application's current status, including any published documents or correspondence related to the patent process.

If you're unable to find the information you need through public databases, or if the search process is too complex, reaching out to Mitsubishi's patent department or legal team directly could be a valuable next step. They should have records of all patent applications filed by the company and can provide you with specific details regarding the status of your application. Remember, navigating patent databases can be tricky, and it's important to have as much information as possible about the patent application to facilitate your search.