Why working with AI in patent matters is not straightforward – for now (part two)

Managing IP is part of Legal Benchmarking Limited, 1-2 Paris Gardens, London, SE1 8ND

Copyright © Legal Benchmarking Limited and its affiliated companies 2026

Accessibility | Terms of Use | Privacy Policy | Modern Slavery Statement

Why working with AI in patent matters is not straightforward – for now (part two)

Sponsored by

cabinet-oproiu-400px.png
Profile of human head surrounded by network of lines

Raluca Vasilescu of Cabinet M Oproiu continues a series on AI’s potential use in patent practice by analysing drafting experiments focused on differentiating from the closest prior art

The first article in this series dealt with experiments by the author using two AI assistants. One was internally adapted for use by Cabinet M Oproiu’s patent attorneys by deleting its memory. The experiments involved using the AI assistants to respond to two office actions for two patent applications in different technical fields.

The use of AI assistants by patent attorneys is tempting as it can shorten the time taken to prepare submissions.

This article deals with experiments using the AI assistants for patent drafting and explores the limits of deploying AI assistants in such a manner.

Description of the experiments

The first application described a method and its equipment for multiple coating of a textile for use in the medical field – a tangible subject matter. In this case, the inventor knew very well the closest prior art and described the new invention as compared to it.

The second application described a method and a system for adapted data processing using neural networks – a very abstract subject matter. In this case, there was no closest prior art known to the inventor, but rather some different pieces of prior art from various sources.

The purpose of the experiments was to see how much one can rely on the reasoning of an AI assistant.

In both cases, due to confidentiality constraints, the AI assistants were fed successive rounds of input consisting of fragments from the inventor’s disclosure and targeted questions.

The AI assistants were not used to prepare the draft of the patent application. They were used exclusively to help differentiate from the closest prior art.

For the first application, the inventor provided the firm with the drawing of the equipment and some explanations.

The steps of the method and the main items of the equipment were created from the drawing and then compared with prior art. Here, the AI assistants were used to compare the step-by-step method of the new invention with the method from prior art and to give the differences and the advantages.

Then, the inventor was consulted to confirm the differences, which constituted the essential features and the advantages in support of the inventive step. The majority of the input received from the two AI assistants was confirmed by the inventor.

For the second application, the lack of a clearly defined prior art and the possibility of selecting among various problems to be solved by the invention was the main difficulty of the case. Here, the AI assistants were effectively useless, as this was a matter of filing strategy.

The author has noted that in many cases, the inventors mention too many disadvantages of prior art, too many problems to be solved, and too many advantages of the invention. In the case of multiple technical problems to be solved, the invention is not unitary, which leads us – as counsels – to the necessity to select a single problem to be solved, even if the problem can have sub-objectives allowable by the European Patent Convention (EPC).

Then the challenge is this: which problem to be solved is the best one to select? The author’s usual advice is that the best problem is the one for which there are stronger arguments to prove inventive step. Again, the AI assistants are useless here.

For this application, the AI assistants were used for only two purposes:

  • To clarify the terms to be used in the invention; and

  • To double-check that the origin of the disadvantages of prior art was correctly understood.

In both cases, the author expressly mentioned links to the EPC and to the Guidelines for Examination in the European Patent Office in the input to the AI assistants.

Provisional conclusions on the use of AI for patent drafting

Using AI assistants when drafting patents can be helpful, but it depends heavily on various parameters, such as the technical field and whether the inventor already knows the closest prior art.

The choice of which features are essential and which are optional when drafting patent applications, and how AI assistants can help, is discussed in the next article by Cabinet M Oproiu.

more from across site and SHARED ros bottom lb

More from across our site

While IP Australia’s updated manual could be favourable to computer-implemented inventions, stakeholders would like to see whether a consistent and reliable standard is followed during actual examination
UKIPO will remain a competitive option as long as efficient service continues
A future opt-out has not been ruled out, but practitioners warn that the UK could fall behind in the AI race
US patent lawyers say they are increasingly advising clients on China strategies as corporations seek to gain leverage in enforcement, licensing, and supply chain management
Mike Rueckheim reunites with 12 of his former Winston & Strawn colleagues as King & Spalding continues aggressive hiring streak
As global commerce continues to expand through e-commerce platforms and digital marketplaces, protecting brands has become a growing challenge for organisations worldwide. Counterfeiting, intellectual property infringement, and online brand abuse are increasing across industries, making brand protection strategies a critical priority for businesses.
Henrik Holzapfel and Chuck Larsen of McDermott Will & Schulte explain why a Court of Appeal ruling could promote access to justice and present a growth opportunity for litigation finance
A co-partner in charge says the UK prosecution teams are a ‘vital’ part of the firm’s offering, while praising a key injunction win
A team from White & Case has checked in on behalf of Premier Inn Hotels in a UK trademark and passing off case against a cookie brand
Litigation team says pre-trial work and a Section 101 defence helped significantly limit damages payable by ride-sharing firm Lyft in patent case
Gift this article