What is Mullen Coughlin's unique approach?

Mullen Coughlin is uniquely dedicated to cybersecurity and data privacy law, with a team of accessible and motivated attorneys who have handled thousands of events and possess unmatched experience and talent in the industry. The firm's focus on these specialized areas sets it apart from traditional law firms.

Who are the founding partners of Mullen Coughlin?

Mullen Coughlin was founded by John Mullen, Jennifer Coughlin, Jim Prendergast, and Chris Diienno. These founding partners have built a team of experienced attorneys who are dedicated to serving organizations facing data privacy and security challenges.

What industries does Mullen Coughlin serve?

The website does not provide specific information about the industries Mullen Coughlin serves. However, as a law firm focused on cybersecurity and data privacy, the firm likely works with a wide range of organizations across various sectors that need assistance in these areas.

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Mullen Coughlin

$12.0M revenue • 40 employees • 426 W Lancaster Ave, Devon, PA, 19333, United States

Last Updated Dec 7, 2025

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Company Overview

Company Name

Mullen Coughlin

Address

426 W Lancaster Ave, Devon, PA, 19333, United States

Website

mullen.law

Phone

(267) 930-4770

Approx. Annual Revenue

$12.0M

Employees

Established

2016

Google Reviews

4.8 (12 reviews)

Google Business Category

Law firm

About Mullen Coughlin

Mullen Coughlin LLC is a law firm dedicated to representing organizations facing data privacy events and information security incidents. Founded in Devon, PA, the firm has approximately 201 employees and is led by a team of experienced attorneys who specialize in pre-breach planning, breach response, regulatory investigations, and privacy litigation defense.

Business Profile

Read from the Mullen Coughlin website on Oct 22, 2026. Hover an item to see the exact wording it came from.

About the website

Website quality (AI-assessed): 8/10 · Current copyright 2026; Detailed practice descriptions
Footer copyright year: 2026

Mullen Coughlin is hiring

Open roles listed on their website as of Oct 22, 2026.

Administrative Assistant
Intake Specialist
Intake Specialist
Legal Administrative Assistant (Litigation)
Legal Administrative Assistant - (Litigation - PST)
Associate Attorney
Incident Response Partner Attorney
Associate Attorney (UK)
Senior Associate (UK)
Associate Attorney (PT/MT)

Hiring in: Office & admin, Legal

View careers page →

Recent changes

What changed on the Mullen Coughlin website and Google listing, as detected by Coldlytics on each visit.

Oct 22, 2026
Started advertising open roles
Administrative Assistant, Intake Specialist, Intake Specialist

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Frequently Asked Questions about Mullen Coughlin

Technologies Used

Social Profiles

Key Decision Makers

Christopher Diienno Partner

John Mullen Partner

Richard Hall Partner

Elizabeth Dill Partner

Cameron Carr Partner

Kevin Yoegel Partner

Karissa Smith Partner

Gregory Bautista Partner

Lynda Klebanoff Partner

Kari Lane Business Owner