Leo H. Konzen, Of Counsel
As the senior member of Lueders, Robertson & Konzen, LLC, Alton native Leo H. Konzen brings over 50 years of legal experience to the firm, focusing his practice on probate and real estate law.
Leo received both his Bachelor's (1951) and law (1953) degrees from the University of St. Louis, where he was a member of Phi Delta Phi legal fraternity. A former Special Assistant Illinois Attorney General (1969-1983) and City Attorney for Granite City (1993-1997), Leo has a venerable track record of active participation in the legal community. He served as President of Tri-City Bar Association from 1962 to 1964, and as Secretary (1958-59) and Chairman of the Grievance Committee (1971-73) of the Madison County Bar Association. From 1983 to 1990, Leo belonged to the Attorney Registration and Discipline Commission Inquiry Board of the Illinois State Bar Association, and since 1990 has been a member of the State Bar's Hearing Panel. He also served as Vice Chair for the Corporation, Banking, and Business Law Committee of the American Bar Association from 1987 to 1988.
Leo’s history of community involvement includes serving as a member of the Board of Governors of St. Elizabeth's Medical Center in Granite City from 1972 to 2001, belonging to the Board of Directors of East-West Gateway Coordinating Counsel from 1977 to 1979, and acting as a member of the Board of Trustees of Southwestern Illinois College from 1987 to 1988.
R. Eric Robertson, Member
Son of firm co-founder Randall Robertson, Granite City native Eric Robertson maintains a general law practice with the firm, focusing on Energy Law and Public Utilities Law.
Eric has been a member of the Illinois Bar since 1973, following completion of his law studies at St. Louis University (J.D. 1973) and undergraduate work at DePauw University (B.A. 1968). Eric served as Assistant City Attorney for Granite City from 1973 to 1975 and as Special Assistant Illinois Attorney General from 1975 to 1983. He was Attorney for the Tri-City Regional Port District from 1994 to 2005 and has been Attorney for the Granite City Park District since 1994.
Eric served on the Board of Directors of Coro Foundation in St. Louis, Missouri from 1985 to 1987, on the Lay Advisory Board and Ethics Committee of St. Elizabeth Medical Center in Granite City from 1986 to 2001, and on the Board of Directors for the Tri-City Area United Way from 1991 to 1998. He currently serves on the Board of Alcoholic Rehabilitation Community House, a position he has held since 1985.
Brian E. Konzen, Member
Brian E. Konzen concentrates on Environmental Law, Employment Law, Municipal Law, Commercial Litigation, and Probate matters. Brian completed his undergraduate work at Notre Dame (B.A. 1981), including education abroad at St. Patrick's College in Maynooth, Ireland. While at the University of St. Louis School of Law (J.D. 1984), Brian distinguished himself with the Kneip Award for Appellate Advocacy (1983) and also by authoring an article published in the St. Louis University Public Law Forum (Vol. 4, No.1, 1984). Brian is a former Assistant City Attorney (1987-2005) and current City Attorney (since 2005) for Granite City.
Brian maintains his ties to the community through service on the Governing Board of the Granite City Public Library (1987-1989) and as Attorney for the Six Mile Regional Library District since 1991. Brian is the current President of the Tri-City Bar Association, and a member of the Madison County Bar Association, the Illinois State Bar Association, and the American Bar Association.
Ryan Robertson, Associate
Ryan Robertson marks the third generation of lawyers connected to the firm to associate with Lueders, Robertson & Konzen, LLC. A Granite City native and graduate of St. Louis University, In addition to general practice, Estate and Probate work, and Municipal Law, Ryan also focuses his practice on Public Utilities and Energy Law. He serves as an Assistant City Attorney for Granite City and maintains an active membership in the Tri-City Bar Association, the Madison County Bar Association, the Illinois State Bar Association, the Energy Bar Association and the American Bar Association. Ryan remains active in the community, acting on the Board of Phoenix Crisis Center since 2005, and serving as Board President in 2006.
Additionally, Ryan is also an Assistant State's Attorney for Madison County, Illinois, and an Assistant City Attorney for Granite City. He also serves as an attorney for the Granite City Park District.
Tanja Cook, Associate
Tanja Marion Cook earned both her bachelor's and law degrees from Southern Illinois University, as well as an associate's degree from Belleville Area College, where she twice made the Dean's List and was honored with the Outstanding History Student Award. Tanja was admitted to practice in the state of Illinois in 1999 and has experience in the general practice of law with an emphasis in real estate law, contracts, and transactional matters. Tanja handles a wide range of municipal law issues as an Assistant City Attorney for Granite City, and is a former Attorney for the Madison County State Attorney's Office.
From 2003 to 2006, Tanja served as an adjunct instructor at Southwestern Illinois College, teaching legal document production to business and paralegal students. She is currently serving as an Arbitrator for the Madison County Court, and is an active member of the Tri-City Bar Association (President, 2006). Tanja is a member of the Illinois State Bar Association and formerly served on that organization's standing committee on real estate.
Tanja is currently a board member of the Granite City Rotary and the Granite City Truancy Task Force. In 2017, she was elected to the Granite City Board of Education. She is an active member of Second Baptist Church and serves on the Gateway Baptist Association Housing Board (President, 2008). Tanja also devotes her time to providing pro bono legal assistance to the Land of Lincoln Legal Assistance Foundation.