In any legal matter, the opposing counsel is the lawyer representing the other side. If you’ve been sued, opposing counsel is the plaintiff’s attorney. If you’re the plaintiff, it’s the defense attorney. In a criminal case where you’re the accused, opposing counsel is the prosecutor. The meaning is straightforward, but what the term carries with it is the thing worth understanding: that lawyer’s entire job is to advance their client’s position, and nothing about their role requires them to help, warn, or be fair to you personally.
What Opposing Counsel Is There to Do
Every attorney operates under a professional duty to represent their client with “reasonable diligence and promptness.”1American Bar Association. Rule 1.3 Diligence The ABA’s Model Rules put the advocacy function more bluntly: a lawyer “zealously asserts the client’s position under the rules of the adversary system.”2American Bar Association. Model Rules of Professional Conduct Preamble and Scope
Opposing counsel does not represent you. They owe you no loyalty. They cannot give you legal advice. If you tell them something, they can use it against you. If you ask them about your rights, they have no obligation to educate you. This is not misconduct. It’s the adversarial system working as designed, on the theory that two dedicated advocates produce better outcomes than one decision-maker trying to sort out the truth alone.
What Opposing Counsel Can Do in a Civil Case
Most of what opposing counsel does happens on paper and in offices, not in a courtroom. The tools below are the main ones they’ll use against your side.
Mandatory Disclosures
Before either side asks for anything, federal rules require both parties to hand over basic information. Within 14 days of an initial planning conference, each side must disclose the names and contact information of witnesses with relevant knowledge, copies or descriptions of supporting documents, a computation of claimed damages, and any insurance policies that might cover a judgment. Each side’s obligation is independent, so one party can’t refuse because they think the other’s disclosures were inadequate.3Legal Information Institute. Federal Rules of Civil Procedure Rule 26 State courts have their own disclosure rules, which vary.
Discovery
After initial disclosures, both sides dig deeper. Opposing counsel can request documents from you, send written questions called interrogatories that you must answer under oath, and conduct depositions where you or other witnesses give sworn testimony outside of court.4American Bar Association. How Courts Work – Discovery Your side has the same tools. Discovery is where most of the time and money in litigation gets spent, and it’s often where cases are decided before trial ever becomes a possibility.
Subpoenas to Third Parties
Opposing counsel can also compel people who aren’t parties to the lawsuit to produce documents or testify. An attorney authorized to practice in the relevant court can issue and sign a subpoena directly, without a judge’s approval. That means opposing counsel could subpoena your employer, your bank, or your doctor, subject to applicable privileges. The subpoenaed person generally must be within 100 miles of where they live or work, and the issuing attorney has a duty to avoid imposing an unreasonable burden.5Legal Information Institute. Federal Rules of Civil Procedure Rule 45
Motions
Motions are written requests asking the judge to make a specific decision. Opposing counsel files them to shape the case: moving to dismiss, asking the court to exclude certain evidence, seeking summary judgment (a ruling that ends the case without trial because there’s no genuine factual dispute), or addressing procedural matters like deadlines and discovery compliance.6American Bar Association. How Courts Work – Motions Your attorney responds in writing, and the judge may hold oral arguments before ruling.
Settlement Negotiations
Most civil cases end in settlement. Opposing counsel negotiates on behalf of their client, and the posture varies by lawyer and by case. Some use hard positional bargaining. Others look for creative resolutions involving things beyond money. Whatever the style, remember who they work for: a settlement offer reflects what helps their client, not what’s fair to you.
What Opposing Counsel Looks Like in a Criminal Case
When the government charges you with a crime, the prosecutor is opposing counsel, but with obligations a civil litigator doesn’t have. A prosecutor must avoid bringing charges they know aren’t supported by probable cause and cannot try to get an unrepresented defendant to waive important pretrial rights.7American Bar Association. Rule 3.8 Special Responsibilities of a Prosecutor
The most consequential duty is disclosure. Prosecutors must turn over all evidence that tends to show the defendant is not guilty or that reduces the severity of the offense, including mitigating information relevant to sentencing.7American Bar Association. Rule 3.8 Special Responsibilities of a Prosecutor This principle traces to the Supreme Court’s decision in Brady v. Maryland, and federal policy requires prosecutors to take a broad view of what counts as exculpatory and err on the side of disclosure.8U.S. Department of Justice. Justice Manual 9-5.000 Issues Related to Discovery, Trials, and Other Proceedings
Limits That Protect You
Zealous advocacy has hard boundaries. Lawyers are officers of the court, meaning they carry an obligation to the fair administration of justice that’s separate from their duty to their client.9Legal Information Institute (LII). Officer of the Court A few of those limits matter directly to the person on the other side.
They Can’t Lie to the Judge
Opposing counsel cannot knowingly make a false statement of fact or law to a judge. If they’ve already made one, they must correct it. They cannot present evidence they know to be false, and if they discover that evidence they already submitted is false, they must take steps to fix it. If opposing counsel knows about a court decision in their jurisdiction that directly undermines their client’s argument and your side hasn’t cited it, they are required to tell the judge about it themselves.10American Bar Association. Rule 3.3 Candor Toward the Tribunal
They Can’t Hide or Tamper with Evidence
Opposing counsel cannot destroy, conceal, or alter documents or other materials that could serve as evidence. They cannot coach a witness to lie or offer illegal inducements for testimony. And they generally cannot ask a non-client to voluntarily stay silent and withhold relevant information from your side.11American Bar Association. Rule 3.4 Fairness to Opposing Party and Counsel
They Can’t Contact You Directly if You Have a Lawyer
If you have an attorney, opposing counsel generally cannot communicate with you directly about the case. The ethics rules prohibit a lawyer from talking about the subject of the representation with someone they know is represented, unless your lawyer consents or a court order permits it.12American Bar Association. Rule 4.2 Communication with Person Represented by Counsel This applies even if you reach out first. The rule exists to prevent opposing counsel from exploiting the knowledge gap between a lawyer and a non-lawyer, to protect your relationship with your own attorney, and to keep you from accidentally disclosing privileged information.
If opposing counsel contacts you directly and you have a lawyer, don’t engage. Tell them to contact your attorney and end the conversation.
General Misconduct
Any lawyer, including opposing counsel, commits professional misconduct by engaging in dishonesty, fraud, or deceit, or by behaving in ways “prejudicial to the administration of justice.”13American Bar Association. Rule 8.4 Misconduct That includes harassment or discrimination based on protected characteristics in the course of practicing law.
If You Don’t Have Your Own Lawyer
When you’re unrepresented, opposing counsel can talk to you directly, but with constraints. They cannot pretend to be neutral or suggest they’re looking out for you. If they realize you misunderstand their role, they must make reasonable efforts to correct the confusion. And they cannot give you legal advice (other than to get a lawyer) when they know your interests conflict with their client’s.14American Bar Association. Rule 4.3 Dealing with Unrepresented Person
This is one of the most lopsided situations in the legal system. You’re facing a trained professional whose job is to advance the other side, with no one doing the same for you. Anything you say can and likely will be used against you. If the dispute involves real stakes, getting your own attorney should come before any substantive conversation with the other side’s lawyer.
What Happens When Opposing Counsel Breaks the Rules
In federal court, every document an attorney signs carries an implicit certification: the filing isn’t meant to harass or delay, the legal arguments are supported by existing law or a good-faith argument for changing it, and the factual claims have evidentiary support. Violations can lead to sanctions including payment of the attorney fees you incurred because of the misconduct.15Legal Information Institute (LII). Federal Rules of Civil Procedure Rule 11
Federal law separately targets attorneys who drag out proceedings. Under 28 U.S.C. ยง 1927, a court can require an attorney who “multiplies the proceedings in any case unreasonably and vexatiously” to personally pay the excess costs, expenses, and attorney fees caused by the conduct.16Office of the Law Revision Counsel. 28 USC 1927 The word “personally” matters: the attorney pays, not the client.
Beyond what a court does in a specific case, opposing counsel faces discipline from their state bar for professional misconduct, with consequences ranging from private reprimand to suspension or disbarment.13American Bar Association. Rule 8.4 Misconduct If you believe opposing counsel has crossed a line, you can file a complaint with the state bar, and your own attorney can advise whether seeking sanctions in court makes strategic sense.
Do You Have to Pay Opposing Counsel’s Fees if You Lose
Usually, no. Under the “American Rule,” each side pays its own attorney fees regardless of who wins. Two common exceptions change the outcome.
The first is a contract. If you signed an agreement with a prevailing-party clause (common in leases, business contracts, and homeowner association agreements), the loser pays the winner’s legal fees. Courts often apply these provisions on an all-or-nothing basis, so the winning side can recover its fees even if it didn’t prevail on every claim.
The second is a statute. Certain laws shift fees to encourage private enforcement. In federal civil rights cases, for example, a court can award reasonable attorney fees to the prevailing party.17Office of the Law Revision Counsel. 42 USC 1988 Similar provisions appear in consumer protection, employment discrimination, and intellectual property statutes. If a fee-shifting rule applies to your situation, the financial downside of losing goes up considerably, and that risk is worth factoring in early.