Atty. Mariko C. Willis

Atty. Mariko C. Willis

Mariko C. Willis is an of counsel attorney for Willis Law.

Kalamazoo Kalamazoo 9 yrs experience 9 year
Call (888) 959-9527 Book Appointment

Profile Summary

About Mariko C. Willis at a glance

Mariko C. Willis is an Of Counsel based in Kalamazoo, Michigan, practicing at Willis Law. They have 9+ years of legal experience, licensed to practice since 2017. Their practice focuses on trusts, probate, estate planning, business, and real estate. Admitted to practice in Michigan (2017). Educated at Thomas M. Cooley Law School (J.D., 2017). Serands clients in Kalamazoo, MI and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • Mariko C. Willis is an of counsel attorney for Willis Law
  • She is admitted to practice law in the state of Michigan
  • Attorney Mariko C. Willis, J.D., is an Of Counsel attorney at Willis Law, specializing in estate planning, estate and trust administration, estate and trust litigation, corporate law, and real estate law
  • Mariko graduated cum laude with a J.D. from Thomas M. Cooley Law School
  • Mariko was designated as a Rising Star in Super Lawyers for 2019 and 2020, an award reserved for less than 2.5% of attorneys that practice in the State of Michigan
  • A military veteran, Mariko joined the Marine Corps in 2003, in honor and memory of her late brother, Corporal Christopher K. Willis, and served honorably from 2003–2011 and 2014-2019
  • Mariko has attended the Marine Corps Career Retention Specialist School, has supported training operations around the world, and deployed in support of Operation Enduring Freedom with Command Joint Task Force HOA in 2007
  • Mariko then served in numerous capacities as a Reservist, most recently filling the billet of Company Gunnery Sergeant and Deputy Family Readiness Officer for Engineer Support Company, 6th Engineer Support Battalion, 4th Marine Logistics Group, out of Battle Creek, Michigan
  • Mariko also serves as the Chief Operations Officer and on the Board of Directors for the Corporal Christopher K. Willis Foundation, a committee member for Ducks Unlimited Greater Kalamazoo, and is a member of the Kalamazoo Rod and Gun Club, the National Rifle Association, and the Kalamazoo Detachment of the Marine Corps League
  • Mariko is very active in the community, volunteering and supporting many local charitable organizations
  • When out of the office, Mariko enjoys hunting, fishing, reading, and spending time with her son, Tyson
  • Since 2014, Willis Law has been honored by US News and World Report as a Best Law Firm
  • Additionally, from 2010-2017, the firm was selected as one of the 101 Best and Brightest Companies to Work For in West Michigan and since 2014 as a National Best and Brightest Winner
  • Willis Law dedicates its practice to God, the Lord Jesus Christ, and the founders’ fallen brother, Corporal Christopher Kelly Willis

Practice Areas Explained

Mariko C. Willis's Areas of Practice

Each practice area below reflects the types of cases Mariko C. Willis handles, with a brief overview of what that area of law covers.

Trusts

Mariko C. Willis is one of 104,172 trusts attorneys indexed nationally. Browse trusts attorneys in Michigan →

Probate

Mariko C. Willis is one of 128,014 probate attorneys indexed nationally. Browse probate attorneys in Michigan →

Estate Planning & Probate

An estate planning attorney prepares wills, trusts, powers of attorney, and healthcare directives to protect your family and pass on your assets.

Mariko C. Willis is one of 226,537 estate planning attorneys indexed nationally. Browse estate planning attorneys in Michigan →

Business & Corporate Law

Business attorneys advise founders and growing companies on entity formation, contracts, financing, M&A, and dispute resolution.

Mariko C. Willis is one of 501,317 business attorneys indexed nationally. Browse business attorneys in Michigan →

Real Estate Law

Real estate attorneys handle home purchases, sales, commercial transactions, title disputes, and landlord-tenant matters.

Mariko C. Willis is one of 316,149 real estate attorneys indexed nationally. Browse real estate attorneys in Michigan →

Jurisdictional Context

Why local counsel matters in Michigan

Practicing law in Michigan. Legal matters in Michigan are governed by state-specific rules of civil and criminal procedure, statutes of limitations, and substantive law. Cases originating in Kalamazoo are typically filed in the local municipal court or the appropriate Michigan state district court, depending on subject matter and amount in controversy. An attorney licensed in Michigan brings working knowledge of local procedural deadlines, judicial practices in this andnue, and the substantive law that applies to cases brought here. Out-of-state attorneys generally cannot represent clients in Michigan courts without local counsel or pro hac vice admission.

Looking for additional Michigan attorneys? Browse all attorneys in Kalamazoo or all attorneys in Michigan.

Frequently Asked

Common questions about Mariko C. Willis

Where is Mariko C. Willis's law office located?
Mariko C. Willis's law practice is located in Kalamazoo, Michigan. The firm is Willis Law. You can contact the office directly through this profile page.
What practice areas does Mariko C. Willis handle?
Mariko C. Willis focuses on trusts, probate, estate planning, business, real estate. Each practice area listed reflects experience handling cases of that type in Michigan.
How long has Mariko C. Willis practiced law?
Mariko C. Willis has 9+ years of legal experience and has been licensed since 2017.
Where did Mariko C. Willis go to law school?
Mariko C. Willis earned their education at (J.D., 2017).
How can I contact Mariko C. Willis for a consultation?
You can contact Mariko C. Willis directly through this profile page. Click "Ask the Attorney" to submit a question, or "Schedule a Consultation" to book a meeting. Most claimed-profile attorneys respond within one business day.

Education

J.D.
Thomas M. Cooley Law School
- 2017

Bar Admissions

Michigan
Admitted: 2017

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