Business Details
48 Years
experience
Your Trusted Legal Partner in Oak Brook, IL
Lillig & Thorsness was founded in Oak Brook, Illinois in 1978 and has become a premier business-oriented law firm serving Chicago's western suburbs. Our attorneys offer extensive experience across diverse legal disciplines, prioritizing personalized service and reasonable rates. We build enduring client relationships through active listening, understanding goals, and delivering tailored solutions. With practitioners admitted in multiple jurisdictions, we provide nationwide legal support. Our reputation is rooted in client referrals and long-term partnerships with businesses, professionals, and families.We combine sophisticated technology with skilled legal teams to ensure efficient, high-quality service. Our practice areas include business law, real estate, estate planning, litigation, and title insurance. We operate with transparency, no hidden fees, and a commitment to ethical standards. Our decades of experience and client-centric approach distinguish us as trusted legal advisors. We continuously adapt to industry changes while maintaining a focus on client success.
Services
Appellate Litigation
Business Law
Construction Law
Employment Law
Estate Planning
Financial Institutions
Litigation
Real Estate
Title Insurance
Personal Injury
Details
- Year established: 1978
Highlights and features
- We offer over 45 years of legal experience in Chicago's western suburbs
- Our attorneys are admitted in multiple jurisdictions nationwide
- We provide personalized service with no hidden fees
- Our reputation is built on 90% client referrals
- We combine advanced technology with traditional legal expertise
What people say
Fantastic advocate
Invaluable partner
Prompt professional service
Exceptional representation
Trusted advisor
Services
Estate Planning
Our estate planning attorneys create customized strategies to protect your assets and ensure smooth wealth transfer. We design wills, trusts, and advanced directives tailored to individual family needs while minimizing tax implications. With decades of experience handling complex estates, we provide clear guidance through probate and trust administration processes.
Business Law
We advise businesses on formation, mergers, contracts, and compliance matters. Our attorneys represent corporations, LLCs, and partnerships in transactional work and dispute resolution. We provide strategic guidance on ownership succession and executive compensation plans to ensure long-term business viability.
Real Estate
Our real estate practice handles commercial and residential transactions, development projects, and title insurance matters. We represent owners, developers, and lenders in acquisitions, financing, and construction contracts while addressing zoning and regulatory compliance issues.
Litigation
We represent clients in business, employment, and construction litigation matters. Our trial attorneys handle breach of contract claims, employment disputes, and complex commercial cases through negotiation, arbitration, or courtroom litigation when necessary.
Title Insurance
Through our affiliated title company, we provide title insurance services for residential and commercial real estate transactions. We ensure clear property titles and handle title defect resolution to protect clients' property investments.
People
Martin J. Lillig
Senior Equity Partner
Co-founder with extensive experience in business law and estate planning. Advises business owners on entity selection, mergers, and succession planning. Recognized for combining legal expertise with practical business solutions.
William W. Thorsness
Senior Equity Partner
Co-founder specializing in estate planning and wealth preservation. Helps families create comprehensive plans for asset transfer while minimizing tax implications. Known for patient client education and thorough documentation.
Adrian Mendoza
Equity Partner
Managing partner with expertise in business litigation and employment law. Represents clients in complex commercial disputes and employment-related lawsuits. Recognized for strategic thinking and courtroom advocacy.
Thomas G. Oddo
Equity Partner
Experienced trial attorney handling appellate litigation and construction law matters. Successfully resolved numerous high-stakes cases through trial, arbitration, and mediation. Provides practical legal strategies for dispute resolution.
Gregory F. Smith
Of Counsel
Real estate specialist with four decades of experience in commercial transactions. Represents developers and owners in complex real estate deals. Known for meticulous attention to detail in contract negotiations and property closings.
Questions
What areas of law does Lillig & Thorsness specialize in?
We focus on business law, real estate, estate planning, litigation, title insurance, and employment law, serving both individuals and businesses.
How long has the firm been in operation?
Lillig & Thorsness has served clients since its founding in 1978, with attorneys possessing decades of combined legal experience.
Do you serve clients outside Chicago's western suburbs?
While based in Oak Brook, our attorneys are admitted in multiple jurisdictions and represent clients throughout the United States.
How can I schedule an initial consultation?
Contact our Oak Brook office at (630) 571-1900 to discuss your legal needs and arrange a consultation with our attorneys.
What makes your estate planning services unique?
We offer customized estate plans with visual blueprints showing asset distribution strategies, ensuring clients fully understand their options before document preparation.
