Ruling Concerning Series LLCs in Illinois Highlights Importance of Differentiating and Following Statutory Procedures
Hinshaw Alert | 2 min read
Jul 10, 2020
While the Illinois Limited Liability Company Act (IL LLC Act) has provided a statutory mechanism for establishing Series LLCs since 2005, the Illinois Fourth District Appellate Court only issued its first ruling concerning Series LLCs in March 2020.
In City of Urbana v. Platinum Group Properties, LLC, the court held that a Series LLC, Platinum Group Properties, LLC – Sunnycrest Series, failed to prove it was a separate legal entity from its parent company, Platinum Group Properties, LLC. The case dates back to June 2014 when the City of Urbana (City) filed a complaint against Platinum Group Properties, LLC, for property maintenance code violations in three separate buildings on adjacent properties in the City. After a lengthy trial, it was found that the buildings did, in fact, violate numerous ordinances and Platinum Group was fined accordingly. Platinum Group appealed, and the court affirmed the ordinance violations. At the same time, however, the court vacated the criminal surcharge assessment, reversed the fine, and then remanded the cause for the circuit court to "reconsider its imposition of the fine."
In 2018, as part of the ongoing litigation, the City of Urbana filed a misnomer motion to amend the record and identify the entity by its full name, Platinum Group Properties, LLC – Sunnycrest Series. Platinum Group filed a memorandum opposing the City's motion and argued that the City had not only sued the wrong entity, but that this was not a simple case of misnomer. Citing § 37-40 of the IL LLC Act, Sunnycrest also asserted that it was a Series LLC, and thus a separate corporate entity from Platinum Group.
As the court explained, § 37-40 of the IL LLC Act allows an LLC to create one or more series, the purpose of which is to protect the assets of one series from the liabilities of another. It also acknowledged that "the facts of this case highlight the complexity the provision creates for litigation involving series LLCs." Unfortunately for Sunnycrest, in its opposition memorandum, they failed to submit a file-stamped certificate of designation from the Illinois Secretary of State, which is an Illinois statutory filing requirement. According to the court, this would have demonstrated that the Series LLC was properly organized under the IL LLC Act.
However, as the court noted, even if the statutory requirements had been met, Sunnycrest would have been estopped from asserting that this was a case of mistaken identity instead of misnomer. This is because throughout the course of litigation, Sunnycrest and Platinum Group had the same manager and agent for service. The manager specifically testified that the properties in question were part of Platinum Group, thus failing to differentiate Sunnycrest as a separate legal entity. In the end, the court granted the City's motion to amend the record and held that previous rulings against Platinum Group would apply to Sunnycrest.
The recently lowered filing and annual report fees in Illinois may generally reduce the appeal of the Series LLC structure as opposed to individual LLC formations. However, for those interested in maintaining this corporate structure, Platinum Group highlights the importance of differentiating each LLC in the series and carefully following the Illinois Secretary of State statutory procedures.
Related Capabilities
Featured Insights

Consumer Crossroads: Where Financial Services and Litigation Intersect
Jul 30, 2026
Should Text Messages be Considered “Calls” Under the TCPA? The Seventh Circuit Says No

Healthcare Alert
Jul 30, 2026
California Courts Sharply Curtail the MICRA Damages Cap in Nursing Home Litigation

Insights for Insurers Alert
Jul 30, 2026
Analyzing a Couple of Cases Involving Exclusions in D&O Policies

In The News
Jul 29, 2026
Hinshaw Authors Contribute Two Articles in Latest Edition of the CCFL Quarterly Report

Webinar
Jul 28, 2026
Cathy Mulrow-Peattie and Sabrina Janeiro Present on Legal AI Technology

In The News
Jul 27, 2026
Scott Seaman Discusses How the Insurance Industry Contributed to the 2026 FIFA World Cup

Privacy, Cyber & AI Decoded Alert
Jul 27, 2026
Compliance Guidance for the New Vermont Data Privacy and Online Surveillance Act (VDPOSA)

Healthcare Alert
Jul 24, 2026
Q&A: Right to Electronic Monitoring Extended to Illinois Assisted and Shared Living Facilities

Press Release
Jul 23, 2026
Insurance Partner Christophe Burusco Joins Hinshaw in Los Angeles

In The News
Jul 16, 2026
Jennifer Driscoll Anticipates Epic Battle Between “Titans of the Antitrust Bar”

Press Release
Jul 15, 2026
Two Hinshaw Partners Recognized in Minnesota Monthly's 2026 Top Lawyers in Minnesota

