Mark A. Brown

David A. Golin is a top attorney recognized by Best Lawyers in the practice area(s) of Bankruptcy and Creditor Debtor Rights / Insolvency and Reorganization Law. David A., 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 David A. is held by other top lawyers in the same geographic and legal practice area.

Lee is an intellectual property litigator and advisor who manages sophisticated portfolios for clients with worldwide operations. His practice includes the full range of intellectual property dispute and transactional matters, with an emphasis on trademark, copyright, trade secret, trade dress, privacy and litigation. Lee serves as lead counsel before state and federal courts and administrative agencies throughout the country, and he also coordinates efforts to resolve similar international d...

Clients engaged in complex commercial real estate and corporate finance transactions count on LaVon M. Johns’ experience, insight, and commitment to help them anticipate issues, address challenges, and, ultimately, get to “yes.” A consummate dealmaker who balances business savvy and legal know-how with outstanding communication skills and a deep commitment to building long-term client relationships, LaVon focuses her practice on complex commercial real estate and finance mat...

Susan is a partner in the Private Wealth Services practice group. Susan focuses her practice on sophisticated estate planning for business owners, wealthy individuals and entrepreneurs. She helps her clients transfer wealth to younger generations to achieve tax efficiencies as well as protection for beneficiaries and counsels her clients in connection with complex intrafamily issues that wealthy families often face. In addition to helping clients structure their estate plans, Susan advises cl...

Mark Filip, a former federal judge and high-ranking Justice Department official, helps to lead Kirkland’s government enforcement defense and internal investigations group, and serves as a member of the Firm’s Executive Committee. As a partner in the Firm’s Chicago and Washington, D.C. offices, Mark has successfully guided numerous Fortune 100 companies and financial institutions through complex mission-critical moments, counseling leaders and Boards of Directors on high-stak...

Valerie Montague represents a variety of health care providers, digital health companies, senior living facilities, nonprofit trade associations, life sciences companies and vendors of health care providers. Valerie is a Certified Information Privacy Professional/United States (CIPP/US), the preeminent credential in the field of privacy. What do you focus on? I focus my practice on three main areas. HIPAA/Health Information Privacy and Security I assist health care providers and business asso...

Mr. Grund is a Founding Partner with Grund & Leavitt. He practices exclusively in the area of family law concentrating in all aspects of matrimonial litigation.He has successfully represented individuals on all issues arising from divorce proceedings which involve, among other things, the valuation and disposition of substantial business interests, custody, maintenance and other marital and parental rights. Mr. Grund is known as a creative lawyer with a keen sense of the rules and the law...

Charles A. Porretta is a top attorney recognized by Best Lawyers in the practice area(s) of Mass Tort Litigation / Class Actions - Plaintiffs and Personal Injury Litigation - Plaintiffs. Charles A., 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 Charles A. is held by other top lawyers in the same geographic and legal practice area.

Holby is a strategic intellectual property advisor who focuses on the creation, development, protection and enforcement of numerous sophisticated global patent and trademark portfolios. His practice encompasses all aspects of patent and trademark development, including prosecution, licensing, opinion work, counseling and due diligence. Holby provides legal services with a full appreciation of the perspectives of in-house counsel, management and technical staff, routinely advising them regardi...

Mr. del Hierro is a partner in the Corporate Practice Group of Kirkland & Ellis and heads our bank regulatory practice. He has more than 30 years of experience in representing banks and bank holding companies, thrifts and thrift holding companies, payments and fintech companies, investment banks and institutional lenders in connection with regulatory issues relating to capital formation transactions, mergers and acquisitions and complex financings. He has significant experience representi...