David Duski

Director at BDO

David Duski is a director in BDO’s forensic investigation and litigation services group and leads its national IP consulting practice. Throughout his career, Mr Duski has offered dispute resolution services in various IP matters, including those involving patent infringement, trademark and trade dress infringement, copyright infringement and trade secret misappropriation. He has also provided various non-dispute-related IP consulting services to entities including the evaluation of global patent licensing strategies and a portfolio analysis of existing patent licence agreements.

Mr Duski 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 pre-judgment and post-verdict interest for both plaintiffs and defendants. He has also served as an expert witness in matters filed in a US district court, state court and before the American Arbitration Association. In addition, he has lectured on the topic of IP damages at John Marshall Law School, Loyola University Chicago School of Law, the Chicago Bar Association and the IP Law Association of Chicago.

Mr Duski’s case experience encompasses a broad array of industries, including automotive, aviation, biotech, cellular, chemicals, consumer products, energy, financial securities, healthcare, heating, ventilation and air conditioning, information technology, internet, medical products, military, network security, online learning, optical, pharmaceuticals, semiconductors, sporting goods, supercomputers and telecommunications.

Mr Duski received a BSC in accounting and finance, with high honours, from DePaul University. He is a certified public accountant licensed in Illinois and Wisconsin, a certified licensing professional and a certified fraud examiner.

Professional associations

  • ABA
  • LES

Firm details

330 North Wabash Avenue
Suite 3200
Chicago IL 60611
United States

Contact details