What Was the Exclusive Automotive Lawsuit Against Johnson Group?

The Vinnie Johnson Piston Group lawsuit was a Wayne County Circuit Court case the former Detroit Pistons guard filed in May 2021 against the Michigan Minority Supplier Development Council after the council moved to strip his automotive companies of their minority business certification. On August 27, 2024, Judge Annette J. Berry ruled in Johnson’s favor, finding that the council’s president and CEO, Michelle Robinson, had manipulated certification rules in retaliation after Johnson refused a $300,000 contribution and that she had a hidden conflict of interest tied to an effort to acquire his companies.¹

What Set the Dispute Off

In March 2020, Johnson hired Gordon Fournier, a veteran automotive finance executive who is white, as Piston Group’s chief operating officer and chief financial officer.² Fournier reported directly to Johnson.

Two months later, the MMSDC wrote to Piston Group saying that two subsidiaries, Irvin Automotive and AIREA, no longer qualified as minority business enterprises because they were “not managed on a day-to-day basis by one or more minority group members.” The council also warned that the entire Piston Group could face decertification unless certain non-minority executives were replaced.¹

What followed was a series of reversals. In October 2020, the MMSDC said AIREA met the criteria. In November, it said the opposite. By January 2021, the council declared that none of the Piston companies were certifiable, including two subsidiaries it had cleared just months earlier.¹ For a supplier that depended on minority certification to keep contracts with automakers running supplier diversity programs, that decision put the business at serious risk.

What Johnson Sued Over

Johnson and the Piston companies filed suit on May 18, 2021, in Wayne County Circuit Court, naming the MMSDC and Robinson as defendants. The complaint made three main claims:

Tortious interference with existing and prospective business relationships through the wrongful pursuit of decertification.
Breach of contract, arguing the MMSDC had failed to follow the national NMSDC Handbook’s certification criteria that governed its relationship with certified businesses.
Declaratory judgment asking the court to declare the decertification wrongful and order recertification under proper standards.

In June 2021, a Wayne County judge ordered the MMSDC to reinstate Piston Group’s certification while the case moved forward. The Michigan Court of Appeals affirmed that preliminary order in March 2022, keeping the company’s minority status in place during the years of litigation that followed.³

What the Trial Uncovered

A three-week bench trial took place in December 2023 before Judge Berry. The evidence went well past a technical dispute over certification standards.

A Refused $300,000 Contribution

According to the court’s findings, Robinson asked Johnson for a $300,000 contribution to the MMSDC after learning the scale of his success. When Johnson asked how the money would be used, he was “met with resistance and fury,” Judge Berry wrote.⁴ Johnson declined and gave his financial support to the national NMSDC instead. The court found sufficient evidence that Robinson then targeted the Piston companies for decertification as payback.¹

An Attempted Acquisition

Joe Laymon, a former head of human resources at Ford Motor Company, testified that Robinson and a group were working to buy the Piston Group, and that the plan was to use decertification to drive the company’s value down and make it easier to acquire. The court noted testimony that Robinson tried to hide her involvement by using her husband as the named participant in a newly formed entity called Atlantic Coastal Acquisition Corporation. Judge Berry concluded this was a conflict of interest in her role overseeing certification.¹

A Rule Invented Along the Way

Under the national NMSDC Handbook, a minority owner could delegate day-to-day management to anyone as long as the owner kept ultimate control. Robinson introduced what the court called a “new rule,” published in the MMSDC’s newsletter in April 2021, requiring that any delegation of management responsibilities go only to another minority individual. No such requirement existed in the national handbook.¹

Staff members who disagreed were pushed aside. Irma Lisk, a certification specialist who had handled the Piston account for eight to ten years and found the companies compliant, was removed from the assignment. Jacqui Showers testified that Robinson ordered her to revoke AIREA’s certification after Showers had already approved it.¹

How the Judge Ruled

Judge Berry issued her opinion on August 27, 2024. She wrote that Robinson and the MMSDC “manipulated the rules to obtain a desired result by arbitrarily changing the rules and applied the incorrect standard” for certification.¹ The core findings:

Robinson intentionally and wrongfully interfered with Piston Group’s business relationships, and the MMSDC was liable for her conduct under respondeat superior, the doctrine that makes an employer responsible for acts an employee commits within the scope of the job.
There was no valid basis for decertification. Johnson remained actively involved in operations, and no rule required the highest-ranking officer, or a majority of the executive team, to be a minority.
As sole owner, Johnson was “permitted to delegate authority to anyone he pleases,” so long as he retained ultimate control.
The plaintiffs were entitled to a permanent injunction barring the MMSDC from continuing to interfere with Piston Group’s certification and business relationships.⁵

The court also observed that the 2021 preliminary injunction had already prevented significant harm by preserving Piston Group’s relationships with customers like Ford and Stellantis during the litigation.¹

Appeal and Fallout

The MMSDC said it was disappointed with the ruling, called it a “concerning precedent,” and moved to appeal in September 2024.⁶ As of March 2025, a judge upheld Piston Group’s minority certification, meaning the company has kept its MBE status throughout the dispute.⁷

The dispute reshaped the council itself. Ford Motor Company and Lear Corporation withdrew from the MMSDC’s board of directors, with reporting attributing the organization’s instability to the prolonged legal battle and related internal strife.⁸

1
Wayne County Circuit Court. Johnson v. MMSDC, Case No. 21-006110-CB
2
Piston Group. Piston Group Names Gordon R. Fournier Chief Operating Officer and Chief Financial Officer
3
The Detroit News. Piston Group Keep Minority Certification Amid Legal Battle
4
The Detroit News. Judge Rules in Favor of Piston Group Keeping Minority Certification
5
Michigan Chronicle. Vinnie Johnson’s Piston Group Wins Lawsuit Against Michigan Minority Supplier Development Council
6
Crain’s Detroit Business. Ruling in Vinnie Johnson’s Piston Group Case Appealed
7
Crain’s Detroit Business. Vinnie Johnson’s Piston Group Has Minority Status Upheld
8
Crain’s Detroit Business. Ford and Lear Withdraw From Minority Supplier Council Board