We are committed to constantly improving the way you interact with legal information

Lexum Lab – Lexum’s research and development team – leverages natural language processing, machine learning, deep learning and other artificial intelligence approaches and techniques to make legal information retrieval wiser, easier and faster. We partner with leading academic researchers on concrete projects and applications that will transform the way you find, process and share legal information.


Industrial member of the Institute for Data Valorization

IVADO is a joint initiative by academia (HEC Montréal, Polytechnique Montréal and the University of Montreal) and industry. Its goal is to develop a new economic sector evolving around massive data processing to support decision making.

Collaboration with the Montreal Institute for Learning Algorithms

The machine learning laboratory at the University of Montreal is one of the world’s leading teams in artificial intelligence and deep learning.

Department of Computer Science and Operations Research at the University of Montréal

The Department of Computer Science and Operations Research (DIRO) was one of the first university-level computer science departments in North America. At the master's and doctoral levels, the international-caliber research conducted in the DIRO is a major attraction for students looking for a cutting-edge environment in which to study and work.


Automatic Classification on CanLII Part 1: Functionalities

2023-07-14 / By Lexum

Automatic Classification is a new advanced artificial intelligence feature developed by Lexum for the CanLII website. The Automatic Classification feature leverages artificial intelligence algorithms and natural language processing techniques to categorize legal documents by subject automatically. For this project, Lexum used its own language model...

Learning from the Citation Network or How to Boost Your Search Results with AI

2023-06-23 / By Lexum

Lexum is committed to using Artificial Intelligence (AI) to implement new features and improve our clients’ user experience. Lately, we have been working on a search improvement feature for CanLII that learns from the citation network between cases, and it’s a game changer. This new feature dramatically enhances search through Neural Links and...

CatLII is Back, Summarizing and Analyzing Case Law

2023-06-02 / By Lexum

Canadian legal researchers got a gentle and friendly purring awakening this morning with the launch of a new pilot project to generate case analysis by artificial intelligence (AI). CatLII is back as a prolific CanLII Connects contributor that summarized hundreds of leading cases from CanLII like it was a ball of yarn. CatLII case analysis merges the...


Our technology enables organizations of all sizes to deliver content to end users with unparalleled speed and efficiency. We are constantly looking for new ways to automate and streamline the operation of legal information databases. Over the years, this has led us to replace manual editing by complex algorithms based on heuristics whenever possible.

One such example is Lexum’s citator, Reflex, which is used to automatically insert links on legal citations included in the text body of legal documents.

Another example is Decisia’s auto-fill feature, which enables our clients to extract all sorts of metadata values directly from the body of their unstructured documents in one single click.

This expertise, coupled with the large volume of legal information available to Lexum in parsable format, puts us in a unique position to leverage the opportunities presented by recent developments in the field of artificial intelligence, machine learning and deep learning.

Innovation has been part of Lexum’s DNA since the beginning. Twenty-five years ago, we started providing access to Supreme Court of Canada decisions on a Gopher server before the Web was even invented. Eventually, static webpages gave place to dynamic websites, and more recently bespoke software code gave way to Software-as-a-Service (SaaS) products. Overall, in collaboration with the clients and partners who have trusted us, we have transformed the legal publishing industry. We intend to continue doing so.