John J. Castaneda

Patrick D. Owens is a top attorney recognized by Best Lawyers in the practice area(s) of Trusts and Estates. Patrick D., who practices law in Chicago, Illinois, has been recognized since 2025. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Patrick D. is held by other top lawyers in the same geographic and legal practice area.

David represents management nationwide in virtually all areas of labor and employment law. David’s goal is to identify what each client seeks to achieve and then realize that end. David’s dedication to service is manifest in his accessibility to the clients he serves. A direct communicator, David is valued by clients and colleagues alike for providing practical and on-point legal advice, clear answers to complex questions, and workable business solutions. With more than 30 years o...

Martin G. Durkin is a trial lawyer whose practice includes antitrust and commercial litigation. He has successfully litigated business and transactional disputes, and tried many complex commercial matters. Mr. Durkin's practice is focused on commercial matters, including breach of contract, business torts, RICO, securities fraud and consumer fraud. Mr. Durkin has also represented a number of Fortune 500 companies in the defense of class actions and mass actions. Representative Matters Class A...

Doug Sawyer is a partner in the Intellectual Property practice of Paul Hastings and is based in the firm's Chicago office. Mr. Sawyer’s practice focuses on intellectual property litigation and enforcement. He has extensive litigation experience, including complex civil litigation, patent and trademark infringement, trade secret misappropriation, false advertising, deceptive trade practices, antitrust, and breach of contract. Mr. Sawyer has counseled clients on all aspects of intellectua...

Peter J. McAndrews is a Shareholder at McAndrews and practices in all areas of intellectual property and complex technology law. He has been involved in all aspects of patent litigation, acquisition and counseling, involving a broad spectrum of electrical, biomedical and mechanical technologies. Peter is a US Patent and Trademark Office-to-Appeals Court patent attorney and litigator who helps his clients secure intellectual property rights, make smart decisions with those rights and litigate,...

Alexander J. Bandza is a top attorney recognized by Best Lawyers in the practice area(s) of Energy Law. Alexander J., who practices law in Chicago, Illinois, has been recognized since 2025. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Alexander J. is held by other top lawyers in the same geographic and legal practice area.

Philip A. Bareck has been with Katz Friedman since 1991, became a partner in 2003, and a shareholder in 2007. Currently, he is an Adjunct Professor at IIT Chicago-Kent College of Law teaching Workers' Compensation Law, has been selected as an Illinois Super Lawyer (5% of the attorneys in Illinois), included in Best Lawyers in Workers’ Compensation Law, awarded inclusion in Top Trial Lawyers (American Trial Lawyers Association top 100 Trial Lawyers for Illinois), Top Attorneys in Illinoi...

Michael Sheehan is a top attorney recognized by Best Lawyers in the practice area(s) of Litigation - Labor and Employment. Michael, who practices law in Chicago, Illinois, has been recognized since 2024. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Michael is held by other top lawyers in the same geographic and legal practice area.

Steven H. Sklar is a top attorney recognized by Best Lawyers in the practice area(s) of Litigation - Intellectual Property. Steven H., who practices law in Chicago, Illinois, has been recognized since 2022. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Steven H. is held by other top lawyers in the same geographic and legal practice area.

Dave Resnicoff helps sophisticated companies and executives manage government investigations, whistleblower allegations, and global compliance obligations in a practical way. Dave has experience in a wide variety of industries, and especially in life-sciences, medical device, and medical technology. Dave helps his clients build and assess their compliance programs in light of their business model and risk profile. He helps them respond credibly and proportionately through internal investigati...