David Duski

David Duski



BDO Chicago National Office



Executive Summary

David Duski is a director in BDO’s Forensic Investigation and Litigation Services group and leads its intellectual property consulting practice. Throughout his career, David has offered dispute resolution services for cases involving patent infringement, trademark infringement, trade secret misappropriation, false advertising, breach of contract, business interruption, legal malpractice, and product liability, among others.  He has also provided financial and economic consulting for attorneys and corporate clients.
David has conducted complex financial analyses involving lost sales, lost profits, incremental profits, manufacturing and marketing capacity, fixed and variable costs, product line profitability, price erosion, reasonable royalties, unjust enrichment, commercial success, and prejudgment and post-verdict interest for both plaintiffs and defendants. He has also served as an expert witness in matters filed in U.S. District Court, state court and before the American Arbitration Association. Additionally, David has lectured on the topic of intellectual property damages at The John Marshall Law School, Loyola University Chicago School of Law and the Chicago Bar Association.
His case experience encompasses a broad array of industries including automotive, aviation, biotechnology, cellular, chemicals, consumer products, energy, financial securities, healthcare, heating, ventilation, and air conditioning (HVAC), information technology, internet, medical products, military, network security, online learning, optical, pharmaceuticals, semiconductors, sporting goods, supercomputers, and telecommunications.
Prior to joining BDO, David was employed with Davis & Hosfield Consulting LLC, a firm that specializes in financial consulting as part of the litigation and dispute resolution process.

Professional Affiliations

American Bar Association
American Institute of Certified Public Accountants
Association of Certified Fraud Examiners (ACFE)
Chicago Bar Association
Illinois CPA Society (ICPAS)
Licensing Executives Society (LES)


B.S., Accounting and Finance, DePaul University (high honors)