Michael P.Koslen (Mike)


Cleveland + 1.216.586.7092

Mike Koslen focuses his practice on complex civil litigation. He represents clients in commercial disputes, class actions, products liability, bankruptcy, government investigations, and internal investigations. He is experienced in many aspects of pretrial and trial preparation, including motion practice and depositions, and advises clients on the preservation, collection, and production of electronically stored information (ESI). He also maintains a pro bono immigration practice.

Prior to joining Jones Day, Mike taught for the Law and Leadership Institute, which teaches skills in law, leadership, and analytical thinking for students in underserved communities. He is also an adjunct professor of appellate advocacy at The Ohio State University Michael E. Moritz College of Law.


  • Nine Point Energy secures trial victory clearing path for successful reorganization through sale of its assetsJones Day represents an oil and gas exploration and production company, Nine Point Energy, that is the Debtor in a chapter 11 bankruptcy case, leading to the successful ruling from the bench concluding that at least $150 million of the $157 million in liens asserted by Caliber were invalid, thus, clearing the path for the successful reorganization of Nine Point through a sale of its assets.
  • Hardwood manufacturer obtains dismissal with prejudice in Southern District of CaliforniaJones Day successfully defended a manufacturer of hardwood flooring in a putative class action in the U.S. District Court for the Southern District of California, involving claims that client's flooring products are defective and that its advertising violates California's consumer protection laws.
  • Commercial sterilization company defends against multiple personal injury lawsuitsJones Day serves as lead counsel for a commercial sterilization company in multiple personal injury cases.
  • Commercial sterilization company defends against putative class actionJones Day is representing a commercial sterilization company in a putative class action seeking medical monitoring damages from Ethylene Oxide exposure at a facility formerly owned by the client.
  • Sherwin-Williams obtains favorable decision from Seventh Circuit in personal injury casesA Jones Day cross-office, cross-practice team obtained a precedential decision from the Seventh Circuit that directed judgment as a matter of law for The Sherwin-Williams Company following a consolidated trial of three personal injury plaintiffs claiming injury from their exposure to white lead carbonate pigments (WLC).
  • Yazaki successfully resolves automaker lawsuit alleging price-fixing and bid riggingJones Day represented Yazaki Corporation and Yazaki North America, Inc. in successfully resolving a civil antitrust lawsuit brought by an automaker following Jones Day's filing of motions for summary judgment and to exclude the plaintiff's sole expert witness.
  • Salvadoran woman obtains asylum despite narrowed scope of social groupIn September 2017, a team of three Jones Day attorneys from Atlanta, Cleveland, and Mexico City sat down with VGY in the Laredo Detention Center.
  • M&G debtors confirm chapter 11 plan of liquidation and close sale of Corpus Christi plant for $1 billionOn December 17, 2018, the United States Bankruptcy Court for the District of Delaware entered an order confirming the Third Amended Plan of Liquidation (the "Plan") of Jones Day client M&G USA Corporation and eight of its affiliates (the "M&G Debtors"), which prior to the chapter 11 filing, were, along with their affiliates in Mexico, Brazil and Europe, one of the largest producers of polyethylene terephthalate resin – used for packaging applications – in the world. On December 28, 2018, after receiving antitrust approval, the M&G Debtors closed the sale of their partially constructed manufacturing facility in Corpus Christi, Texas, (the "Corpus Christi Plant") with a deal value in excess of $1 billion.