Debora de Hoyos

Sanford E. Perl (Sandy) concentrates on the corporate, securities and tax aspects of complex business transactions, including leveraged buy-outs of public and private companies; strategic mergers, acquisitions, investments and joint ventures; venture capital and growth equity investments; divestitures; initial public offerings; private equity fund formations; executive compensation; and debt and equity restructurings and workouts. He manages transactions in a wide variety of industries, inclu...

Garret Leach is a nationally recognized first chair trial lawyer who focuses on patent and other intellectual property litigation. He is a registered patent attorney and has successfully led litigation teams in district courts throughout the country as well as at the International Trade Commission. He has also argued for his clients before the U.S. Court of Appeals for the Federal Circuit and the Patent Trial and Appeal Board. His appellate arguments include a successful argument in front of ...

In each year since 2015, Bryan has been listed in the IAM Patent 1000 – The World’s Leading Patent Professionals for Litigation. He is also recognized in Patent Litigation: Full Coverage in the 2018, 2021 and 2022 editions of The Legal 500 United States. Bryan has litigated and counseled on patent matters for companies of various sizes across a variety of complex industries and technologies including medical devices, optical networking, pharmaceuticals, 3-D technology, material co...

Described by clients as a "phenomenal practitioner and extremely bright," Michael Hartz advises on business succession planning, tax-efficient wealth transfer into trusts for future generations and strategies for fulfilling philanthropic goals. Michael is ranked among the leading lawyers for private wealth law in Chambers High Net Worth, where his practical, effective solutions to complex problems have led to consistent recognition. With 40 years of experience in trust and estate planning and...

A skilled negotiator and litigator, partner Michael F. Koenigsberger focuses his practice on family law- related matters. Recognized as one of Chicago’s leading lawyers in family law, he has represented hundreds of clients in complex custody and financial issues, prenuptial agreements, paternity cases and domestic relations. Particularly adept at dealing with high-asset, complex cases, Michael takes pride in working with clients through all phases of the issues they face, from litigatin...

Tahreem Kalam is a lawyer recognized by Best Lawyers in the practice area of Immigration Law. Tahreem practices law in Chicago, Illinois Best Lawyers has recognized Tahreem Kalam since 2027. The Best Lawyers recognition is based on a peer-review survey of lawyers in the same geographic region and legal practice area. The recognition reflects the professional regard in which Tahreem Kalam is held by other lawyers.

Richard “Rush” Howell is a litigation partner in Kirkland’s Chicago office. Recognized as a trial lawyer companies call when the issues are too important not to fight, Rush has significant experience serving as trial counsel for companies in high-profile restructuring and product liability cases and representing private equity sponsors and their portfolio companies in a wide array of business disputes. His practice spans commercial litigation, restructuring, data security an...

Catherine (Cate) A. Battin represents clients in state and local tax controversies at the audit, administrative and judicial levels in numerous jurisdictions. She provides national state tax strategies for clients on a full range of state tax issues, including income tax apportionment, nexus, combination and sales tax characterization of products and services. She has defended numerous internet sellers in cases brought under the Illinois False Claims Act alleging fraudulent failures to collec...

Laura M. Presto is a lawyer recognized by Best Lawyers in the practice area of Family Law. Laura M. practices law in Chicago, Illinois Best Lawyers has recognized Laura M. Presto since 2026. The Best Lawyers recognition is based on a peer-review survey of lawyers in the same geographic region and legal practice area. The recognition reflects the professional regard in which Laura M. Presto is held by other lawyers.

Brian C. Rupp is a lawyer recognized by Best Lawyers in the practice area of Patent Law. Brian C. practices law in Chicago, Illinois Best Lawyers has recognized Brian C. Rupp since 2010. The Best Lawyers recognition is based on a peer-review survey of lawyers in the same geographic region and legal practice area. The recognition reflects the professional regard in which Brian C. Rupp is held by other lawyers.