Latest Invalid Patent Technology Selection

Author: Editorial Department of Patent Literature Publishing House
Publisher:
Publish Date: 1999-05-01
Features: This book is dedicated to introducing, selecting and compiling patents that have expired in recent years. Due to the various factors leading to patent expiration, many expired patents are not worthless. They merely lose legal protection, but their technological level remains at the forefront in certain fields, still possessing considerable vitality and significant development and utilization value. They can not only enhance a company's technical level but also save substantial patent transfer fees, providing reference and value for the development of new products and technological upgrades. However, we must also realize that freely using "expired patents" does not equate to not infringing. Implementing expired patents does not mean they are unrelated to other valid patents and are not subject to the constraints of valid patents. For example, an expired patent may result from an earlier application; or a single creation may have been granted multiple patents, with some being abandoned after obtaining patent rights, leading to expiration; or an expired patent may contain valid patents. Moreover, expired patents may even be restored after an application for reconsideration. In all these cases, implementing "expired patents" could constitute infringement of other patents. Therefore, before implementing expired patents, it is necessary to conduct comprehensive searches through relevant institutions to confirm their expiration before use.