Chris Aiello Law

📍 Villa Park, IL · Serving DuPage & Cook County

Civil Litigation · DuPage County, Illinois

When the Other Side Doesn’t Hold Up Their End.

A signed contract is a promise the law will enforce. When a client, vendor, partner, or buyer breaks that promise, you have real options, and the sooner you act, the stronger they are. We pursue and defend contract disputes across DuPage County.

0Years of counsel
0Practice areas
1990Established

A contract is a promise the law will enforce, and when the other side breaks it you usually have more options than you think. Paying late or not at all, delivering the wrong thing, walking away from a signed deal, or violating a term you both agreed to are all breaches you can act on. The contract does not even have to be a thick formal document. In Illinois, emails, invoices, purchase orders, and some spoken agreements can be enforced, and the first thing we answer is whether you hold a contract a court will back.

We have pursued and defended contract claims for DuPage County businesses and individuals for more than thirty years, as part of our broader civil litigation practice. When a dispute touches a company, see business litigation; when it centers on a property deal, see real estate litigation or our work on real estate contract disputes. Whichever side you are on, we tell you early what the claim is worth and what it will take to win it.

What We Cover

Contracts We Enforce and Defend

We handle the full range of contract disputes, whether you are owed performance or accused of failing to perform.

Business and commercial agreements

Service contracts, supply and vendor agreements, master service agreements, and unpaid invoices. When a customer or supplier fails to perform, we enforce the deal you signed; when you are the one accused, we test whether the claim holds up.

Purchase and sale agreements

Agreements to buy or sell property, goods, equipment, or an entire business that fall apart before or after closing. We pursue the deposit, the damages, or specific performance, depending on what actually makes you whole.

Partnership and operating agreements

Disputes among owners, members, and shareholders over what the operating, partnership, or shareholder agreement requires, including capital calls, distributions, and management decisions one side says broke the contract.

Promissory notes and loans

Defaults on promissory notes, business and personal loans, guaranties, and settlement agreements. We pursue collection on written obligations and defend borrowers and guarantors against overstated claims.

Construction and contractor agreements

Disputes over construction and contractor agreements, including defective or unfinished work, change orders, delay claims, and mechanics liens, for owners and contractors on either side.

Non-compete and confidentiality agreements

Enforcing or defending non-compete, non-solicitation, and confidentiality agreements, including emergency injunctions when a former employee or partner walks off with customers or trade secrets.
What to Expect

What a Breach of Contract Case Looks Like in Illinois

Most contract disputes are won on two questions: was there an enforceable agreement, and was it actually broken. We start there, pinning down the documents, the communications, and the conduct that prove a contract existed and that the other side failed to perform. A clear answer to those questions usually tells us, and the other side, where the case is headed long before a courtroom is involved.

From there, the remedy drives the strategy. Illinois lets you recover money damages to make you whole, demand specific performance to force the other side to do what they promised, or rescind the deal entirely, and the right choice depends on your goal. Often the fastest result is a firm demand letter that resolves the matter before a lawsuit; when it will not, we are ready to file. Either way, you get an honest read on cost, recovery, and timeline before you commit. Because these cases are filed in the DuPage County courts and the surrounding collar counties, local knowledge matters. We know how these judges read contract claims, what they expect in the pleadings, and where a case tends to settle, and we use that to keep yours moving toward resolution instead of getting stuck in motion practice.

Why Hire Us

What Sets Our Work Apart

Local court experience

30+ years in DuPage and Cook County courts and recorder offices.

Direct attorney access

Chris or John handles your file personally.

Integrated with broader practice

Real estate, litigation, and estate planning under one roof.

Honest case assessment

We’ll tell you realistic outcomes, including when settlement is better than litigation.

Transparent pricing

Flat fees where possible, clear hourly rates where flat doesn’t fit.

Responsive communication

Your calls returned, your questions answered.

Service Area

Serving DuPage & Cook County

From our Villa Park office, we represent clients across DuPage County and the western suburbs of Chicago.

Villa ParkElmhurstLombardWheatonOak BrookDowners GroveAddisonOak ParkGlen EllynBloomingdaleHinsdaleWestmontDuPage CountyCook County
Breach of Contract FAQ

Common Questions

Not always. Many oral agreements are enforceable in Illinois, and emails, invoices, and purchase orders can form a binding contract. Some deals, such as those for real estate or that cannot be performed within a year, must be in writing. We start by confirming you have a contract a court will enforce.

Usually money damages to put you where performance would have. Sometimes the better remedy is specific performance, forcing the other side to do what they promised, or rescission to unwind the deal. The right one depends on your goal, and we map it before you commit.

Generally ten years for a written contract and five for an oral one, measured from the breach. But contracts often shorten that with notice and limitation clauses, so the real deadline can be much sooner. Have us check the dates early.

A claim is not the same as a valid one. We defend by testing whether a contract existed, whether it was actually breached, whether the other side performed their own obligations, and whether their damages are real. A strong defense often becomes a favorable settlement.

Often, yes. A firm, well-grounded demand letter resolves many disputes without the cost and delay of litigation, and it preserves your position if the matter proceeds. We tell you when it is the smart first move and when it would only tip off the other side.

Sometimes. In Illinois each side usually pays its own fees unless the contract says otherwise, so a fee-shifting clause can change the entire economics of a dispute. One of the first things we check is whether your agreement lets the winning side recover fees, because it affects strategy on both offense and defense.

Those clauses control where and how your dispute is decided, and courts usually enforce them. An arbitration clause can mean private arbitration instead of court, and a venue clause can send the case to another county or state. We read these provisions early so there are no surprises about where the fight will happen.

Question About a Contract Dispute?

A free consultation tells you whether you have a viable matter and what the realistic process looks like.