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Who We Are

A good team can save you time and stress when dealing with your case. The staff at Lieber & Lieber Law Group, LLP, works hard to protect your interests. Our firm consists of attorneys, paralegals, and legal assistants. We are here to help you and to provide you with the best service possible.

Individual, personal service is a hallmark of our firm. When you choose Lieber & Lieber Law Group, LLP to represent you, you will begin a professional relationship with our staff that will answer your questions and concerns, keep you abreast of significant developments in your case, give you their best objective legal advice, and provide zealous advocacy on your behalf.

While no attorney can guarantee results in any litigation, we can guarantee that you will receive the best possible representation and advice regarding your legal case. Please allow us the opportunity to serve you and join our list of Representative Clients who have placed their trust and confidence in our firm.

Who We Are

A good team can save you time and stress when dealing with your case. The staff at Lieber & Lieber Law Group, LLP, works hard to protect your interests. Our firm consists of attorneys, paralegals, and legal assistants. We are here to help you and to provide you with the best service possible.

Individual, personal service is a hallmark of our firm. When you choose Lieber & Lieber Law Group, LLP to represent you, you will begin a professional relationship with our staff that will answer your questions and concerns, keep you abreast of significant developments in your case, give you their best objective legal advice, and provide zealous advocacy on your behalf.

While no attorney can guarantee results in any litigation, we can guarantee that you will receive the best possible representation and advice regarding your legal case. Please allow us the opportunity to serve you and join our list of Representative Clients who have placed their trust and confidence in our firm.

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Mark Lieber photo


Mark Lieber
Attorney at Law

For the last 26 years, Mark Lieber has devoted his legal career as a trial lawyer to representing individuals who have suffered serious personal injuries or financial losses. Mark has successfully handled hundreds of cases and has been involved in several high profile wrongful death, personal injury, and insurance bad faith cases. He has collected close to 100 million dollars for his clients. He is committed to his clients’ causes, by achieving outstanding results in settlement, arbitration, mediation and trial. He believes the clients’ needs are paramount; that the lawyer’s service to his client is the central focus of the practice of law. With each new case brings new challenges.

Over the last 14 years, Mark has also devoted significant time to the representation of families who have children with special education needs to ensure the schools are providing these children with the necessary benefits and protection. In 2008, Mark made new law in California with the case of Jennifer C v. LAUSD expanding the school’s duty to protect special education students from assaults, including sexual assaults.

Mark has tried cases in both state and federal court, and conducted approximately 100 binding arbitrations. He has also been involved in some significant appellate decisions including Jennifer C. v. LAUSD (2008) 168 Cal. App.4th 1320, Chowdhury v. City of Los Angeles, et al. (1995) 38 Cal. App.4th 1187, and Mitchell v. Gonzalez (1991) 54 Cal.3d 1041.

Mark received his Juris Doctorate from Southwestern University School of Law in 1989, where he was a member of the Law Review, the Moot Court Honors Program, and the Student Bar Association. Before forming Lieber & Lieber Law Group, LLP, Mark was a partner at Greenberg and Panish in Los Angeles, California, which dissolved after the death of Mark’s longtime mentor, David Greenberg.

Deborah Lieber photo


Deborah Lieber
Attorney at Law

Deborah Lieber, along with her husband Mark, are the founding partners of Lieber & Lieber Law Group, LLP. She is an active trial lawyer in courts throughout California and has litigated cases across the U.S., including New York, Arizona, Utah, Texas, and Florida. Ms. Lieber’s trial practice focuses on catastrophic injuries, insurance bad faith, products liability, wrongful termination, and employment matters. She has achieved success for her clients at mediation, arbitration, and trial.

Ms. Lieber also devotes much of her time to working with non-profit educational and religious organizations, advocating for children with special education needs and representing individuals and families helping them obtain both special education services and financial assistance. She has provided legal counsel for non-profit foundations and associations; executing employment contracts, obtaining grants, securing real estate holdings, and providing legal consultation to community leaders. Ms. Lieber also interned with the Los Angeles City Attorney’s Office, Environmental Protection Section, working to prevent the illegal importation and distribution of protected animals and search and seizure issues.

Ms. Lieber is an active member of the State Bar of California admitted to practice in 1990. She is also admitted to the United States District Court Central District of California, Southern District of California, Eastern District of California, and Northern District of California.

Ms. Lieber received her Bachelor of Arts Degree in English Literature from the University of California at Los Angeles and her Juris Doctorate from Southwestern University School of Law.

David Gibson photo


David Gibson
Senior Paralegal

David Gibson works for Lieber & Lieber Law Group, LLP as a senior paralegal in handling personal injury cases and other civil matters. He works diligently to support our legal team during every stage of the litigation process.

His extensive experience in researching and organizing large amounts of legal documents keeps our legal team in-the-know of important details. David is also highly skilled at investigating, researching, and compiling information through the Internet, data bases, and other online resources.

David is dedicated to providing personal service to each client. He treats each of our clients as individuals worthy of respect, attention and compassion. He enjoys working closely with clients and is committed to making the legal process as seamless and stress-free as possible.

David has a Bachelor of Arts in Journalism with an emphasis in Political Science from California State University Northridge and has over 16 years experience in the legal field.

Mark Lieber - Lieber & Lieber Law Group

Mark Lieber
Attorney at Law

For the last 26 years, Mark Lieber has devoted his legal career as a trial lawyer to representing individuals who have suffered serious personal injuries or financial losses. Mark has successfully handled hundreds of cases and has been involved in several high profile wrongful death, personal injury, and insurance bad faith cases. He has collected close to 100 million dollars for his clients. He is committed to his clients’ causes, by achieving outstanding results in settlement, arbitration, mediation and trial. He believes the clients’ needs are paramount; that the lawyer’s service to his client is the central focus of the practice of law. With each new case brings new challenges.
Over the last 14 years, Mark has also devoted significant time to the representation of families who have children with special education needs to ensure the schools are providing these children with the necessary benefits and protection. In 2008, Mark made new law in California with the case of Jennifer C v. LAUSD expanding the school’s duty to protect special education students from assaults, including sexual assaults.

Mark has tried cases in both state and federal court, and conducted approximately 100 binding arbitrations. He has also been involved in some significant appellate decisions including Jennifer C. v. LAUSD (2008) 168 Cal. App.4th 1320, Chowdhury v. City of Los Angeles, et al. (1995) 38 Cal. App.4th 1187, and Mitchell v. Gonzalez (1991) 54 Cal.3d 1041.

Mark received his Juris Doctorate from Southwestern University School of Law in 1989, where he was a member of the Law Review, the Moot Court Honors Program, and the Student Bar Association. Before forming Lieber & Lieber Law Group, LLP, Mark was a partner at Greenberg and Panish in Los Angeles, California, which dissolved after the death of Mark’s longtime mentor, David Greenberg.

Deborah Lieber - Lieber & Lieber Law Group

Deborah Lieber
Attorney at Law

Deborah Lieber, along with her husband Mark, are the founding partners of Lieber & Lieber Law Group, LLP. She is an active trial lawyer in courts throughout California and has litigated cases across the U.S., including New York, Arizona, Utah, Texas, and Florida. Ms. Lieber’s trial practice focuses on catastrophic injuries, insurance bad faith, products liability, wrongful termination, and employment matters. She has achieved success for her clients at mediation, arbitration, and trial.
Ms. Lieber also devotes much of her time to working with non-profit educational and religious organizations, advocating for children with special education needs and representing individuals and families helping them obtain both special education services and financial assistance. She has provided legal counsel for non-profit foundations and associations; executing employment contracts, obtaining grants, securing real estate holdings, and providing legal consultation to community leaders. Ms. Lieber also interned with the Los Angeles City Attorney’s Office, Environmental Protection Section, working to prevent the illegal importation and distribution of protected animals and search and seizure issues.

Ms. Lieber is an active member of the State Bar of California admitted to practice in 1990. She is also admitted to the United States District Court Central District of California, Southern District of California, Eastern District of California, and Northern District of California.

Ms. Lieber received her Bachelor of Arts Degree in English Literature from the University of California at Los Angeles and her Juris Doctorate from Southwestern University School of Law.

David Gibson - Lieber & Lieber Law Group

David Gibson
Senior Paralegal

David Gibson works for Lieber & Lieber Law Group, LLP as a senior paralegal in handling personal injury cases and other civil matters. He works diligently to support our legal team during every stage of the litigation process.
His extensive experience in researching and organizing large amounts of legal documents keeps our legal team in-the-know of important details. David is also highly skilled at investigating, researching, and compiling information through the Internet, data bases, and other online resources.

David is dedicated to providing personal service to each client. He treats each of our clients as individuals worthy of respect, attention and compassion. He enjoys working closely with clients and is committed to making the legal process as seamless and stress-free as possible.

David has a Bachelor of Arts in Journalism with an emphasis in Political Science from California State University Northridge and has over 16 years experience in the legal field.