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In the world of intellectual property, patent rights play a crucial role in protecting innovation. However, disputes often arise regarding the validity of a granted patent. This leads to a common and important question: Can Patent Invalidation Be Filed Anytime? Legal Time Limits Explained. Understanding the legal time limits for patent invalidation is essential for businesses, inventors, and competitors who wish to challenge a patent’s validity. In this blog, we break down the legal framework, timelines, and practical considerations surrounding patent invalidation proceedings. What Is Patent Invalidation? Patent invalidation is a legal process through which a granted patent is challenged and declared invalid, either partially or completely. A patent may be invalidated if it fails to meet statutory requirements such as: Lack of novelty Obviousness (lack of inventive step) Non-patentable subject matter Insufficient disclosure Wrongful obtainment Invalidation can be ...