In this insightful guide, experienced patent attorney Michael A. Sanzo demystifies the patent process in the US, from invention conception through to product commercialization. Using practical examples, Sanzo sets out clearly and effectively how patents are drafted, challenged, enforced, and strategically leveraged by inventors, attorneys, and entrepreneurs. Key Features: Highlights common pitfalls drawn from experience in patent practice Provides helpful guidance on emerging technologies, such as the use of AI in patent searching and drafting Brings together legal and practical perspectives to help readers use patents as both legal tools and business assets Covers the full patent lifecycle, from invention and application to enforcement, litigation, and post-grant procedures The US Patent System is an essential reference guide for patent attorneys and their clients, legal advisors, and also for inventors and entrepreneurs navigating the legal landscape. In addition it is a superb resource for students in patent law, particularly for anyone undertaking clinical studies such as those within the USPTO Law School Clinic Certification Program.