Caselex-
LexisNexis

At NimaProject, we worked on Caselex, a legal SaaS platform, designing a clear and credible UX/UI that makes complex legal information easy to navigate. We focused on information architecture, search + filtering, case/list views, and a consistent design system (components, typography, spacing, UI states) to support a responsive web app with clean hierarchy, accessibility-minded layouts, and smooth developer handoff for a production-ready interface.

Project: Lexis Nexis // Caselex Legal Doc Indexing
Year: 2022
Industry: Legal Tech
Service: UX/UI Design, Product Design
Our Role: UX Research, Wireframing, UI Design, Design Reviews
Link: lexisnexis.com/en-us/products/caselex.page

Caselex platform — legal research workspace

The Challenge

Researching merger control and antitrust and competition law decisions involves sifting through dense legal documents across various jurisdictions. The Caselex platform provided robust content but had an outdated user experience: search was unclear, filters were difficult to manage, and transitioning between decisions added cognitive strain. On top of that, the timeline of the cases couldn’t be followed through end to end.

The Approach

For Caselex, we combined market and user research to understand how legal professionals search, filter, compare, save, and cite cases. These insights shaped clearer UX flows, wireframes, and prototypes, leading to a focused UI with domain-specific filters, scannable results, and richer decision pages, while aligning with LexisNexis standards and preserving Caselex’s own identity.

Project Goals

Advanced Search Filters

Designed a layered filtering experience across every step of the search journey, helping users narrow results by market, jurisdiction, document type, and relevance without losing context.

Case Timeline Mapping

Introduced timeline views for each case, making it easier to understand legal developments, decision history, and how each case evolved over time.

Keyword Highlighting

Added highlighted search keywords within results and decision pages, allowing users to quickly spot relevant information and assess case relevance faster.

Book on a File

Created a new case organisation feature that lets users group citations into dedicated files, helping law firms keep a clear, structured record of research connected to each case.

Caselex design process — market and user research timeline

Caselex design process — wireframing and UI iteration timeline

Key Screens

A brief showcase of the main UX improvements across the Caselex experience, from faster search and advanced filtering to clearer case organisation and decision exploration. The Book on a File flow demonstrates how users can save and group legal references with more structure, while the search history and timeline screens highlight the platform’s focus on traceability, context, and research continuity. Together, these screens present Caselex as a more focused, efficient, and visually refined legal research tool.

Caselex Market Definitions search interface

Caselex results list with keyword highlighting

Caselex case timeline and Book on a File workspace

Outcome

Caselex is now part of LexisNexis, and this redesign is the product experience it carried into that acquisition. The platform came out of the work clearer, faster and more structured for legal research: layered filters across every step of the search journey, timeline views showing how each case developed, keyword highlighting in results and decision pages, and Book on a File for grouping citations into a structured record.

Day to day that made complex case information easier to manage, explore and present — for the internal team as well as for the law firms researching in it — and it left the platform with a scalable visual direction to grow into rather than a skin to redo.