Published on Sep 22, 2026
For organisations seeking to protect innovation on a global scale, the United States remains one of the world's most important patent jurisdictions. However, US patent practice continues to evolve through legislative reform, judicial decisions and changes in examination procedures, creating new challenges for patent professionals managing international portfolios.
For patent attorneys, patent administrators, IP managers and in-house intellectual property teams, understanding the nuances of the US patent system is essential. A strategy that works in Europe or under the Patent Cooperation Treaty (PCT) may not translate seamlessly to the United States, where procedural requirements and examination practices often differ significantly.
US patent law has undergone significant transformation over the past decade, driven by landmark Supreme Court decisions, Federal Circuit rulings and evolving guidance from the United States Patent and Trademark Office (USPTO).
Patent eligibility, particularly for software, artificial intelligence and life sciences inventions, remains an area of active development. At the same time, examination practices continue to adapt as emerging technologies challenge existing legal frameworks.
For international applicants, staying informed about these developments is critical. Filing strategies that fail to account for changes in US practice can result in unnecessary delays, increased costs or reduced prospects of obtaining valuable patent protection.
One of the biggest challenges for organisations filing internationally is balancing consistency with jurisdiction-specific requirements.
Patent applications are often drafted with multiple territories in mind, yet the level of disclosure, claim drafting and supporting evidence required by the USPTO can differ from that expected by other patent offices.
Patent professionals should consider:
A globally coordinated drafting strategy can reduce the need for costly amendments later in the prosecution process.
Patent prosecution in the United States is rarely a straightforward administrative process. Office actions, examiner interviews, continuation applications and Requests for Continued Examination (RCEs) all form part of a prosecution landscape that offers flexibility but also requires careful planning.
For IP professionals managing international portfolios, strategic prosecution decisions can have a significant impact on both costs and the eventual strength of a patent.
Understanding when to amend claims, pursue continuation applications or appeal examiner decisions has become increasingly important as businesses seek to maximise the commercial value of their intellectual property.
The rapid growth of artificial intelligence is reshaping patent practice globally, and nowhere more so than in the United States.
Patent offices continue to grapple with questions surrounding AI-assisted inventions, inventorship, patent eligibility and the role of machine-generated innovation. While guidance continues to develop, it is worth noting that the current USPTO leadership under Director John Squires, confirmed in September 2025, has signalled a more applicant-friendly stance - particularly for AI and software claims - and practitioners should monitor how this translates into examiner behaviour in practice. Organisations working at the forefront of AI need to ensure that their filing strategies remain aligned with current USPTO practice.
For patent professionals, this means keeping pace not only with legal developments but also with evolving examination trends that may affect the patentability of emerging technologies.
Managing an international patent portfolio involves more than co-ordinating filing deadlines. It requires an understanding of how different patent systems interact and where jurisdiction-specific risks may arise.
For businesses with significant US commercial interests, patent professionals must balance global consistency with local practice. This includes managing prosecution strategies, maintaining procedural compliance and ensuring that patent portfolios continue to support broader commercial objectives.
As innovation becomes increasingly international, the ability to navigate differences between the US, European and other major patent systems is becoming a valuable competitive advantage.
The US patent system remains one of the most influential in the world, but it is also one of the most dynamic. Changes in case law, examination guidance and emerging technologies mean that patent practice continues to evolve at pace.
For patent professionals responsible for protecting innovation across multiple jurisdictions, maintaining an up-to-date understanding of US patent practice is essential. Those who combine strong procedural knowledge with strategic international thinking will be better equipped to build resilient patent portfolios, minimise prosecution risks and maximise the value of intellectual property in an increasingly competitive global marketplace.
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Published on Sep 22, 2026 by Angela Spall