What is it?
A procedural remedy that governs how a defending party can bring its own cause of action against the initiating party in the same case.
counterclaim
Civil ProcedureLegal glossary term
Quick answer
Counterclaim usually means a defendant’s claim against the plaintiff in the same lawsuit. In contracts, it matters because it can offset liability and increase recovery. Before signing, check whether the agreement limits or requires a counterclaim.
Definitions
What is counterclaim?
Legal Definition
A counterclaim lets a defendant assert a claim against the plaintiff within the same lawsuit. It creates a right for the defendant to seek relief, often forcing the plaintiff to defend on two fronts. Courts usually require the counterclaim to arise out of the same transaction or occurrence as the plaintiff's original claim.
Plain-English Translation
Imagine you get a hall pass for the library, but you also tell the librarian they owe you a book because they lost yours.
Contract relevance
Why counterclaim matters in contracts
Failing to raise a valid counterclaim can forfeit the right to recover damages, leaving the defendant exposed to the plaintiff's judgment.
Document context
Where counterclaim appears in documents
| Document type | Section | Why it matters |
|---|---|---|
| Complaint | Rule 13(b) pleading requirements | Establishes pleading standards |
| Master Services Agreement | Section 12.3 Counterclaims | Defines notice and mitigation duties |
| UCC Article 2 | §2‑708(1) | Allows seller to assert counterclaim for breach |
Contract language
Common contract wording
| Contract wording | Plain-English meaning | What to check |
|---|---|---|
| "Defendant may assert any counterclaim arising out of the same transaction" | Allows any related claim | Verify scope matches business risk |
| "Counterclaims must be filed within 30 days of service of the answer" | Deadline for filing | Confirm timeline aligns with court rules |
| "No counterclaim shall be permitted unless supported by adequate pleading" | Pleading requirement | Ensure factual basis is included |
Red flags
Red flags to watch for
Wording examples
Clearer wording examples
Vague wording
"Counterclaim may be asserted"
Clearer wording
"Defendant may assert a counterclaim"
Vague wording
"No counterclaim allowed"
Clearer wording
"Defendant may not assert any counterclaim unless expressly permitted by law"
Note: “clearer” means easier to read — not legally reviewed or guaranteed safe.
Pre-signature checklist
What to check before signing
1
Confirm the contract permits counterclaims and defines any limits.
2
Identify the statutory or rule‑based deadline for filing a counterclaim.
3
Determine whether the counterclaim must relate to the same transaction.
4
Check if a mandatory pleading standard (e.g., Rule 9(b)) applies.
5
Verify who bears the cost of filing and service.
6
Review any notice requirements before asserting a counterclaim.
Party impact
How counterclaim affects each party
| Party | What this party should check |
|---|---|
| Defendant | Ensure right to offset damages and avoid waiver |
| Plaintiff | Prepare to defend against additional claims and possible increased exposure |
Comparison
counterclaim vs similar terms
| Related term | Plain meaning | Main difference from counterclaim |
|---|---|---|
| Cross‑claim | Claim against a co‑defendant | Arises between parties on the same side of the lawsuit |
| Set‑off | Defense that reduces amount owed | Does not create a separate cause of action |
| Counterclaim | Defendant’s claim against plaintiff | Must be pleaded in the same proceeding |
Missing or vague
If counterclaim is missing or vague
If a contract omits clear language on counterclaims, parties may dispute whether a related claim can be raised at all.
Ambiguity often leads to procedural battles over filing deadlines, causing costly delays.
Without defined scope, a defendant might attempt a claim unrelated to the original dispute, prompting a motion to strike.
The plaintiff may argue waiver, forcing the defendant to pursue a separate lawsuit and incurring extra litigation expense.
Judges then must interpret the contract, which can produce inconsistent outcomes.
Document map
Document section map
| Contract section | What to inspect |
|---|---|
| Definitions | Look for a definition of “counterclaim” or related terms |
| Dispute Resolution | Check procedural steps and deadlines for filing |
| Remedies | Verify whether counterclaims are listed as an allowed remedy |
| Termination | See if termination triggers any counterclaim rights |
Visual model
Understand counterclaim fast
An explainer image has not been generated for this term yet.
01
Landlord files a lease termination notice; tenant files a counterclaim for unreturned security deposit.
02
Borrower receives a default notice; lender files a counterclaim for breach of covenant.
03
Franchisor sues franchisee for unpaid royalties; franchisee counterclaims for breach of marketing support obligations.
Document context
How counterclaim shows up in legal documents
Why does it matter?
Failing to raise a valid counterclaim can forfeit the right to recover damages, leaving the defendant exposed to the plaintiff's judgment.
When does it matter?
When the plaintiff files the complaint, the defendant must serve the counterclaim within the deadline set by the court's scheduling order, often 21 days after the answer.
Where is it usually seen?
Standard in Federal Rule of Civil Procedure 13(b) pleadings and appears in many commercial contracts that reference “defenses and counterclaims.”
Who is affected?
Defendant – gains a separate cause of recovery; Plaintiff – risks having to defend against an additional claim and possibly paying a larger judgment.
How does it work?
First, the defendant drafts a counterclaim complaint that meets Rule 13(b) requirements. Then, the counterclaim is filed with the court and served on the plaintiff alongside the answer. Within the court‑specified time, the plaintiff must respond to the counterclaim, either by answering or moving to dismiss.
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Wikipedia
Counterclaim
In a court of law, a party's claim is a counterclaim if one party asserts claims in response to the claims of another. In other words, if a plaintiff initiates a lawsuit and a defendant responds to the lawsuit with claims of their own against the plaintiff,...
Open on Wikipedia →Knowledge graph
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Source & disclosure
This page is an AI-assisted plain-English explanation based on LexPredict Legal Dictionary context and contract-review patterns. It is not legal advice. Meaning may vary by jurisdiction, industry, and exact clause wording.
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