Jones Day Partners with Ontonomi on Legal Data
The law firm is using a new platform to codify historical data from past client matters for current use.
Updated on Oct. 29, 2026 in Professional Services
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Jones Day has entered into a partnership with Ontonomi to utilize its legal ontology platform. The initiative allows the firm to leverage years of accumulated data from past client cases to inform current legal work.
Why it matters
By codifying historical case files, law firms are seeking to make institutional knowledge more accessible and efficient for active litigation and advisory work. This transition highlights a broader shift toward integrating sophisticated data management tools into traditional legal practices.
This partnership involves the integration of a legal ontology platform to organize data from years of past client matters. The total volume of historical data migrated into the system remains undisclosed.
The players
Jones Day
Jones Day is a prominent global law firm providing legal services to clients across various sectors and industries.
Ontonomi
Ontonomi is a technology provider that specializes in developing legal ontology platforms for the legal industry.
Ropes & Gray
Ropes & Gray is a major international law firm that recently deployed an Ontonomi product in its private funds practice.
The details
The Ontonomi platform functions by codifying information from previous legal matters, making that history available for reference in ongoing tasks. Ropes & Gray has also adopted an Ontonomi product, specifically applying the technology within its private funds practice.
Timeline
The partnership between Jones Day and Ontonomi was announced the week of October 29, 2026.
Market Landscape
The adoption of legal ontology platforms signals a shift toward structured data management in major law firms. This move positions participating firms to better leverage institutional history against competitors still relying on traditional document retrieval.
Clients of these firms may see increased efficiency and consistency in the handling of complex matters that rely on historical precedent. However, the use of automated platforms does not change current legal service pricing or consumer billing structures.
The takeaway
Law firms are increasingly turning to specialized software to turn static archives into active assets for current legal strategy. Implementing such technology can help organizations streamline decision-making processes and reduce time spent on manual document review.
Further reading
For more on industry shifts, see Professional Services.
Source note: This article includes information reported by Law.
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