Chicago Divorce

Civil Union and

Family Law Firm

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We are a family law, divorce and civil union law firm

The Law Firm of Martin Osinski is the family law firm dedicated to the aggressive representation of clients in Divorce and Family Law. Our guiding philosophy is to provide exceptional legal representation in a cost effective and expeditious manner.

Why should you hire The Law Firm of Martin Osinski, LLC?

Our philosophy is simple: provide exceptional, compassionate legal representation and outstanding client service. In keeping with this philosophy, every attempt is made to settle the case on terms most favorable to our client without protracted litigation. However, each case is prepared as if it is going to trial to ensure the utmost preparedness and leverage in negotiation.

What makes The Law Firm of Martin, Osinski, LLC different than other lawfirms?

We understand that each client is unique and each case contains a unique set of facts and circumstances. Attorney Martin Osinski prides himself on providing each client with personalized service aimed at attaining the highest client satisfaction.

What Practice Areas do we specialize in?

Family Law

  • Alimony
  • Child Support
  • Civil Unions
  • Custody & Visitation
  • Divorce
  • Domestic Violence
  • LGBT Family Law
  • Marital Settlement & Separation Agreements
  • Mediation
  • Paternity Cases
  • Premarital & Post Nuptial Agreements
  • Property Division

Personal Injury

  • Auto Accidents
  • Elder Abuse
  • Nursing Home Abuse
  • Medical Malpractice
  • Workers’ Compensation


Great lawyer. Martin is a very nice and respectful lawyer. He answered all my questions and was able to help me out with my situation pretty quick. I would hire him again if ever needed.Also he worked around my schedule and met me where it was convenient for myself. Thanks Martin!!!
This attorney is very innovative, professional and passionate about the law! Attorney Osinski is a great attorney who delivers a wealth of knowledge and expertise to his clients. He handles each case with a great deal of professionalism from the beginning to end.
Angela R
Highly recommend. We were very impressed with Marty's knowledge of the law and most importantly, his patience. He explained the law in layman's terminology since it is not our area of expertise. I would definitely recommend Marty.
Marty is a great lawyer. I would highly recommend his services. He is attentive and knowledgeable. He took time to sit down and really understand our case. He is empathic and understanding of his client's needs and very trustworthy. He takes care of things in a very timely yet efficient manner.

Call our Illinois Civil Union and Family lawyer for a free, no obligation consultation at


With offices in Downtown Chicago, Park Ridge, and Oak Brook, we are able to represent clients throughout Cook County, DuPage County, Lake County, and Will County.

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