lighthouse announcement

H5 is Now Lighthouse.

Our expertise, our technology, your results.

“H5’s analytics are very much top of the market, they are unmatched. Also, their tools are highly replicable and perform in a lot of different contexts, which is important to us. On the eDiscovery side they are one of the top firms, but what distinguishes them is their analytics.” – H5 Client 

– From Chambers and Partners, Litigation Support 2019 (awarding Band 1 ranking to H5)

We make navigating the digital era easier.

  • H5 Key Document Identification®.

    Unearth the critical information you need to assess the merits of your case, develop your narrative, prepare for depositions, and succeed at trial with H5 Key Document Identification.  Small teams of experts working virtually by design apply advanced linguistics, data analytics, proven search algorithms, and proprietary technology to rapidly and efficiently surface key documents.  Explore

  • Responsive review, the H5 way.

    Protect your clients from unnecessary cost and risk with our virtual, expert-driven responsive review solution, a combination of technology and expertise. We help you reduce the costs of review with production-ready results, subject only to privilege review.  Transparent, highly accurate and defensible, our solution brings together H5 machine learning algorithms and analytics in combination with linguistic, legal and computer science expertise to quickly and cost-effectively identify the data needed to meet your production obligations. Explore

  • eDiscovery & Hosting with Relativity® (and more).

    Benefit from our expert use of advanced industry and proprietary tools to reduce data volume and streamline workflow for processing, hosting, and production. H5 is a Relativity® Certified partner and Nuix Partner. Along with IaaS and other Managed Services, H5 offers two products for efficient and cost-effective eDiscovery: H5 Matter Analytics®, which includes structured analytics and identification of potentially privileged information and PII, and H5 Matter Intelligence® (a Relativity Innovation Award-winner), for matter visibility, collaboration, and infrastructure monitoring. Not a Relativity user?  No problem. We’re happy to support you in your preferred platform.


  • Expert consulting services: sharing our strengths.

    eDiscovery and information governance can be complex, with a multitude of processes and protocols to consider. Our team of seasoned professionals can help. With expertise in linguistics, computational analytics, statistics, and law, our team can advise and/or testify on information retrieval (search) and the proper measurement protocols and strategies used in technology-assisted review and defensible disposal. We’re also happy to assist at a meet-and-confer. Explore

How we're different.


H5 has helped counsel with some of the largest and highest profile cases in recent history, and on small matters, too. We arm our clients early with the critical evidence necessary for strategic decision-making so they can act from a position of strength and avoid surprises.

Case Studies

One-size-fits-all doesn’t apply to solutions for corporate legal departments and law firms. That’s why we provide hybrid solutions that leverage AI, advanced analytics and linguistics to address your complex litigation and compliance challenges, not off-the-shelf software. As an extension of your team, we work collaboratively with you to determine the best mix of services and technology to get you where you need to go , with accurate, cost-effective, and speedy results.

Services and Solutions

It’s not really a secret. More than just exceptional tools and processes, it’s our experts that make the winning difference. As an extension of your case team, they bring data science to the field of law. Find out more about why you should use H5.


Representative clients


  • O'Melveny & Myers
  • Allen & Overy
  • Boies Schiller & Flexner
  • Pillsbury Winthrop Shaw Pittman
  • Baker Botts
  • Kramer Levin Naftalis & Frankel
  • Bartlit Beck Herman Palenchar & Scott
  • Curtis, Mallet-Provost, Colt & Mosle
  • Stinson Leonard Street
  • Cloudigy Law
  • Baker Botts
  • Kramer Levin Naftalis & Frankel
  • Pillsbury Winthrop Shaw Pittman
  • Stinson Leonard Street
  • Barlit Beck Herman Palanchar & Scott
  • O'Melveny & Myers
  • Allen & Overy
  • Boies Schiller & Flexner
  • Curtis, Mallet-Provost, Colt & Mosle


  • 3M Company
  • DuPont
  • Oracle
  • Verizon
  • Merck
  • Walgreen
  • United Technologies
  • Koch
  • Oppenheimer Funds
  • Viacom
  • Cerberus Capital Management
  • Ameritox, Ltd.
  • Baxter Healthcare
  • Chicago Board Options Exchange
  • Energizer Personal Care
  • Fifth Third Bankcorp
  • R.J. Reynolds Tobacco Company
  • Groupon
  • Kaiser Foundation
  • Real Networks
  • Western Digital
  • Affymetrix, Inc.
  • 3M Company
  • R.J. Reynolds Tobacco Company
  • Verizon
  • Oasis Discovery

NLJ “Best Of” Awards: How Lawyers Voted


Thank you for subscribing to the H5 blog, True North.

We strive to provide quality content on a variety of topics related to search, eDiscovery and the legal realm.

Please check your email inbox for your subscription confirmation!