Mark Blocker Email & Phone Number

Based in Sidley’s Chicago office, Mark Blocker is co-leader of the firm’s ERISA Litigation and Consumer Class Action practice.Mark’s class action practice focuses on two primary areas: consumer and financial services and ERISA. In the ERISA Litigation field, Mark has led the defense of virtually every type of ERISA class action, and has been recognized nationally as one of the leading authorities in the field. In the consumer class action area, Mark has defended numerous credit card issuers, national banks, mortgage lenders, financial institutions and telecommunications companies in a broad range of class actions. He has substantial experience defending class action claims brought under federal consumer protection statutes, such as TILA, FDCPA, TCPA, EFTA and state consumer protection statutes. In the consumer mortgage lending area, Mark has also regularly litigated issues involving preemption provided by federal banking statutes, and has enforced consumer arbitration clauses to defeat class actions.Mark was recognized in Chambers USA 2015–2023 in Nationwide ERISA Litigation, and has been recognized by Chambers each year since 2008. In 2023, he was named one of the “Top 10 Most Influential ERISA Litigation Lawyers in USA” by Business Today. Mark was selected as being among the world’s leading pensions and benefits lawyers in Who’s Who Legal 2016, and has also been recommended in ERISA Litigation in The Legal 500 US 2012–2017.Attorney Advertising. Prior results do not guarantee a similar outcome.

Listed skills include Civil Litigation, Litigation, Corporate Governance, Commercial Litigation, and 10 others.