Tumialan, Rosa Tressler LLP

Tumialán, Rosa M. Partner

Tumialán, Rosa M. Partner

Practice Focus

Rosa M. Tumialán is a partner in Tressler’s Insurance Practice Group, Chair of the Appellate Team and a member of the firm's national Diversity, Equity and Inclusion Committee. Rosa focuses her practice on insurance coverage and litigation. She is an accomplished defense attorney with more than twenty years of experience. Rosa’s insurer-related services include coverage opinion analysis and representing insurers in complex coverage disputes relating to personal and commercial lines, third party claims, surplus lines as well as claims handling practices and extracontractual liability. She has also litigated environmental coverage disputes throughout the Midwest for various insurers relating to superfund sites. Rosa assists with drafting coverage documents for insurance pools and counsels clients in the administration of same. Her practice also includes serving as national coordinating coverage counsel for insurance clients who rely on her to develop and implement strategies nationwide in response to pattern litigation. Rosa is an accomplished class action defense lawyer and appellate practitioner, having appeared and argued in both state and federal courts nationwide.

Professional Background

Rosa compliments her practice with extensive experience gained from judicial clerkships in the Chancery Division of the Circuit Court of Cook County and the First District Illinois Appellate Court. In addition to her reputation as an experienced insurance litigator, Rosa is an equally well-known class action defense lawyer with years of experience in defending class actions filed under the Telephone Consumer Protection Act (TCPA), Illinois Biometric Privacy Act (BIPA) as well as other consumer privacy statutes in both state and federal courts. Rosa is lauded for her ability to develop and employ unique and aggressive strategies for her clients in these evolving areas. She is routinely sought out by companies seeking TCPA and BIPA compliance analysis or those who face TCPA and BIPA liability. 

Rosa has recently been selected by her peers in the 2023 and 2024 edition of The Best Lawyers in America© for Insurance Law. She was also selected in the 2024 edition of The Best Lawyers in America® for Appellate Practice and Insurance Litigation.

Memberships & Affiliations

  • DRI-Member; Insurance Law Committee; Publications Committee, Co-Editor, In House Defense Quarterly
  •  Illinois State Bar Association


Recent Articles and Blogs

"The Latest Volley in the Continued Debate About GL Coverage for BIPA Claims," Tressler Insurance Law Blog, May 23, 2024

"The Statute of Limitations Debate is Over But That’s Not All Tims Does," Tressler Insurance Law Blog, February 3, 2023

The Debate About GL Coverage for BIPA Claims is Not Over — It is Just Starting,” Commercial General Liability Dispatch, May 4, 2022

“Dusting for Prints: Following the Clues in the Application of General Liability Insurance Claims Under the Biometric Information Privacy Act,” DRI- In House Defense Quarterly, March 2022

“Cannabis Cos. Can’t Ignore TCPA Compliance,” Law360, August 28, 2020

 "Why Cannabis Companies Need to Care About the TCPA," NextGen Financial Services Report, August 19, 2020

 "The Big TCPA Case That Wasn’t," The Firewall, July 10, 2020

 "Will COVID-19 Finally Prompt a Federal Privacy Law?" TheFirewall, April 22, 2020

"A BIPA Defense Victory—If You Squint," TheFirewall, October 4, 2019

"The Next Generation of Data Privacy Liability Coverage," DRI-For The Defense, May 2019

 "Is the Illinois Legislature Rethinking BIPA?" The Firewall, March 26, 2019


Presentations & Events


“The Meritocracy Myth: Pipeline Development and Advancement for Diverse Candidates,” Driving Diversity in Law & Leadership: Chicago Summit, Panel Discussion, April 19, 2023

“Tressler Talks: The B-Team - Don’t Pity the Fool About Coverage B,” Tressler Webinar, March 30, 2023

“Managing the Complex Coverage Dispute,” DRI Insurance Coverage Practice Symposium, December 2019

"SCOTUS Review and Preview,” September 17, 2019

“Pathway to Partnership”, Hispanic Lawyers Association of Illinois and Hispanic National Bar Association, March 6, 2019

“The Illinois Biometric Information Privacy Act (BIPA): Implications in Light of Rosenbach,” February 12, 2019

“SCOTUS Review and Preview,” September 18, 2018

“The Illinois Biometric Information Privacy Act: Litigation Risks and Best Practices for Employers and Others,” March 7, 2018

“Navigating Litigation and Compliance Issues Associated with the Telephone Consumer Protection Act,” June 20, 2017

“The Telephone Consumer Protection Act: Why Compliance Matters Now and How to Protect Your Business,” September 2016