Quick answer

A defective Special Power of Attorney (SPA) usually means that the representative cannot bind the principal to the compromise agreement. Under Articles 1317, 1403(1), and 1878(3) of the Civil Code, a compromise made by someone without authority—or beyond the authority granted—is generally unenforceable against the principal unless the principal later ratifies it expressly or impliedly.

The result is not automatically the same in every case:

If the principal personally signed or clearly and expressly authorized the compromise, a defect in the written SPA may not defeat the agreement. The Supreme Court has held that special authority concerns the nature of the authority, not necessarily its written form, unless a law or procedural rule specifically requires writing.
If the agent had no express authority to compromise, exceeded a settlement limit, acted after the authority expired or was revoked, or signed for people who never authorized the settlement, those principals are generally not bound.
If the compromise transfers land and the agent lacked written authority to sell or convey it, the transaction may be void under Article 1874.
If the other contracting party knew that the agent was exceeding the SPA’s limits, Article 1898 may make the transaction void when the principal does not ratify it.
If a court has already approved the compromise, urgent action is necessary because a compromise judgment is generally final, immediately executory, and not subject to an ordinary appeal.

The actual effect therefore depends on the wording of the SPA, the terms of the compromise, the acts of the principal after learning of it, the property or rights involved, and whether a court or administrative tribunal has already acted on the settlement.

Why compromise requires special authority

A compromise is not an ordinary procedural step. Article 2028 of the Civil Code defines it as a contract in which the parties make reciprocal concessions to avoid litigation or end a case already filed.

Because a compromise can surrender claims, reduce an obligation, transfer property, waive remedies, or terminate a case, Article 1878(3) expressly requires special authority before an agent may compromise for another person. A broadly worded authority to “represent,” “manage,” “appear in court,” or “perform all necessary acts” normally covers only acts of administration. Article 1877 provides that even an agency expressed in general and unlimited terms does not, by itself, include acts requiring special authority.

For lawyers, Section 23, Rule 138 of the Rules of Court similarly provides that counsel cannot compromise a client’s litigation without special authority. Retaining a lawyer and authorizing the lawyer to file pleadings or appear at hearings does not automatically authorize the surrender or settlement of the client’s claim.

At pre-trial, the current rules are even more specific: a representative appearing for a party must be fully authorized in writing to enter into an amicable settlement, submit to alternative dispute resolution, and make stipulations or admissions. This appears in Rule 18, Section 4 of the 2019 Amendments to the Rules of Civil Procedure.

What makes an SPA defective for settlement purposes

“Defective SPA” is not a single legal category. The alleged defect must be identified.

No express authority to compromise

An SPA authorizing an agent merely to represent the principal, attend hearings, negotiate, administer property, collect documents, or engage counsel may be insufficient. The mandate must clearly and specifically authorize a compromise.

The Supreme Court explained in Lim Pin v. Liao Tan that the authority may be oral or written when no separate rule requires a particular form, but it must be express. An alleged oral authority must be proved by competent evidence beyond the representative’s self-serving assertion.

The agent exceeded the SPA’s limits

Even an SPA that authorizes compromise may impose limits, such as:

A minimum settlement amount
A maximum payment obligation
A specified claim, case, property, or opposing party
A prohibition against transferring land or admitting liability
A requirement for the principal’s prior written approval
A fixed validity period
A requirement for another person or corporate officer to co-sign

Article 1881 requires the agent to act within the scope of the authority. A compromise outside an express limitation is unauthorized to that extent.

The SPA authorized settlement but not the transaction used to implement it

Authority to compromise does not necessarily include every act that might be placed in a settlement. Article 1880 expressly states that authority to compromise does not authorize submission to arbitration.

Additional authority may also be needed if the compromise:

Sells or transfers land
Creates or conveys a real right over immovable property
Waives an obligation gratuitously
Borrows money
Creates a guaranty or suretyship
Repudiates an inheritance
Performs another act of strict ownership or dominion

In Cosmic Lumber Corporation v. Court of Appeals, an attorney-in-fact had authority to compromise an ejectment case only insofar as the settlement protected the corporation’s interest in recovering possession. She had no authority to sell part of the corporation’s land through the compromise. The Supreme Court declared the sale, compromise, and resulting judgment void.

The SPA was revoked, expired, or otherwise extinguished

Article 1919 lists circumstances that can extinguish an agency, including revocation, withdrawal, death or incapacity in specified cases, dissolution of the corporation that granted or accepted the agency, completion of the purpose, and expiration of the agreed period.

The effects of revocation or another terminating event on third persons can depend on notice, good faith, the type of authority, and the exceptions in Articles 1921 to 1931. The dates of execution, revocation, notice, negotiation, and signature must therefore be established carefully.

The signature or notarization is challenged

A forged SPA does not establish authority. Preserve the original document, notarial details, identification records, signature specimens, and communications surrounding its execution.

However, lack of notarization alone should not automatically be equated with lack of authority in every compromise. The Supreme Court’s rule is that special authority generally concerns the express mandate rather than its form. Separate written or public-document requirements may nevertheless control when the transaction involves land, registrable rights, acts that must appear in a public document, or a procedural rule requiring written authority. Articles 1356 to 1358 and 1874 of the Civil Code must be considered together with the specific transaction.

The person granting authority could not act alone

A person can authorize compromise only over rights that person may lawfully control. One co-owner, heir, employee, union officer, corporate officer, or family member does not automatically have power to surrender the separate rights of everyone else.

Article 2032 requires court approval for compromises entered into by guardians, parents, representatives of absentees, and administrators or executors of estates. Article 2033 provides that juridical persons may compromise only in the form and with the requisites necessary to alienate their property. Corporate resolutions, bylaws, governing statutes, or court orders may therefore be material.

In Golden Donuts, Inc. v. NLRC, the Supreme Court held that a union could not compromise the individual claims of members who had not specifically consented. The settlement and the judgment approving it did not bind those non-consenting workers.

The usual legal effect: unenforceable, not automatically void

Articles 1317 and 1403(1) classify a contract signed in another person’s name without authority, or beyond the representative’s powers, as unenforceable unless ratified.

The Supreme Court reaffirmed this distinction in Fil-Estate Properties, Inc. v. Reyes: absence of the required special authority does not, by itself, make every compromise void. It generally makes the compromise unenforceable against the person who was not properly represented, while leaving open the possibility of ratification.

“Unenforceable” means the other party ordinarily cannot compel the purported principal to perform merely on the strength of the unauthorized signature. It does not necessarily mean that the document never existed or that every provision is invalid as to everyone. The agreement may still bind parties who personally signed or validly authorized it. Whether unauthorized portions can be separated from the remainder depends on the agreement’s language and whether the obligations were intended to be indivisible.

A different result may follow where another law expressly declares the underlying act void. Examples include an unauthorized sale of land through an agent without written authority under Article 1874, a prohibited subject of compromise under Article 2035, an unlawful object or cause, or the situation under Article 1898 where the counterparty knew the limits of the agent’s powers.

Ratification can cure the lack of authority

The principal may ratify an unauthorized compromise before the other contracting party revokes it. Ratification can be express, such as signing a written confirmation, filing a manifestation adopting the settlement, or executing a new and sufficient SPA.

It can also be implied from informed conduct that clearly adopts the agreement. Examples may include:

Knowingly accepting and retaining settlement payments
Executing a release or quitclaim required by the settlement
Demanding performance under the agreement
Delivering property or documents required by it
Invoking the compromise to dismiss or defeat a claim
Remaining silent or acquiescing in circumstances that clearly call for repudiation

Ratification requires knowledge of the material facts. Mere silence is not automatically ratification in every situation.

In Domingo v. NLRC, employees who voluntarily received payments and executed quitclaims were held to have ratified the compromise. Their acceptance of its benefits prevented them from later taking an inconsistent position to the employer’s prejudice.

For that reason, a person disputing authority should obtain legal advice before accepting money, signing receipts, surrendering property, requesting implementation, or otherwise acting under the settlement.

Effect when the court has not yet approved the compromise

Before approval, a party disputing the representative’s authority should promptly place the objection on record. Depending on the forum, appropriate steps may include:

Notify the representative and the other party in writing that the agreement is not authorized and is not being ratified.
File an opposition or manifestation in the pending case identifying the exact defect and attaching the controlling SPA or revocation.
Ask the court or tribunal not to approve the compromise until authority is established.
Request production of the original SPA, corporate resolution, estate authority, or other source of authority.
Avoid accepting benefits or performing obligations that could be treated as ratification.
Continue complying with existing court orders unless they are stayed or set aside.

In Fil-Estate, the Supreme Court deferred action on a compromise signed only by counsel until the parties submitted signed declarations and SPAs establishing the necessary authority.

Effect after court approval

A judicial compromise is more urgent. Under Article 2037, a valid compromise has the authority of res judicata between the parties, and a judicial compromise may be executed directly. Supreme Court decisions generally describe a judgment based on compromise as final, unappealable, and immediately executory.

Court approval, however, does not create consent that never existed or automatically enlarge an agent’s powers. A judgment approving an unauthorized compromise may still be challenged through the proper remedy, but the correct procedure and deadline depend on the record.

Possible remedies in an ordinary civil case may include:

A motion for reconsideration or new trial filed with the approving court within 15 days from notice, where the grounds and procedural conditions are present
A petition for relief under Rule 38 based on fraud, accident, mistake, or excusable negligence, filed within 60 days after learning of the judgment and no more than six months after its entry
Annulment of judgment under Rule 47, when ordinary remedies are no longer available through no fault of the petitioner and the strict grounds of extrinsic fraud or lack of jurisdiction are established
A petition for certiorari in an appropriate case involving grave abuse of discretion and no plain, speedy, and adequate remedy
Opposition to execution or another remedy specifically recognized for a person who was never validly bound

In Domingo Realty, Inc. v. Court of Appeals, the Supreme Court discussed the 15-day motion and Rule 38 remedies for attacking a compromise judgment. Rule 47’s limited grounds and periods appear in the Rules of Civil Procedure.

These remedies are not interchangeable. A defective SPA alone does not automatically prove extrinsic fraud, lack of jurisdiction, or grave abuse of discretion. Labor, agrarian, administrative, arbitration, and small-claims proceedings may also follow different rules and review periods.

Evidence to preserve

Keep complete, unedited copies of:

The SPA, including all pages, attachments, acknowledgments, and notarization
The compromise agreement and every draft
The complaint, answer, pre-trial order, hearing minutes, and relevant submissions
The judgment, approval order, writ of execution, and proof showing when each was received
Letters, emails, text messages, and chat records about settlement authority
Instructions specifying acceptable terms, amounts, or property
Any revocation, substitution, or expiration notice
Corporate board resolutions, secretary’s certificates, bylaws, or partnership approvals
Estate, guardianship, or probate orders
Payment records, receipts, quitclaims, releases, and proof of returned funds
Evidence of the principal’s knowledge—or lack of knowledge—of the agreement
Signature specimens and notarial records if forgery is suspected

Preserve electronic files in their original form with dates, sender information, and attachments. Do not alter screenshots or discard the devices or accounts containing the original communications.

Common mistakes

Assuming that a lawyer’s authority to handle a case includes authority to settle it
Relying on the label “Special Power of Attorney” without reading the powers and limitations
Treating every missing notarization as automatic nullity
Ignoring a separate written-authority requirement for land or pre-trial representation
Allowing one heir, co-owner, union officer, or corporate officer to sign for everyone without individual or institutional authority
Accepting settlement money while intending to challenge the agreement later
Waiting for execution before objecting
Using an ordinary appeal even though a compromise judgment is generally not appealable
Assuming court approval cured an unauthorized signature
Challenging the SPA without identifying the exact unauthorized act
Failing to preserve proof of when the judgment, compromise, or alleged fraud was discovered

How to reduce the risk of a defective SPA

A settlement SPA should ordinarily identify:

The principal and agent accurately
The dispute, parties, court or tribunal, and case number
The express power to negotiate and enter into a compromise
The claims or obligations that may be released
Any minimum or maximum settlement amount
Any property that may or may not be transferred
Authority to sign and file the agreement
Authority, if intended, to receive payment or issue a discharge
Whether dismissal, waiver of appeal, or execution of a quitclaim is authorized
Approval conditions, co-signature requirements, and duration
The principal’s signature and any form, notarization, authentication, or institutional approval required for the intended transaction

The safest practice is for the principal to review and personally sign the final compromise whenever practicable.

When legal help is urgent

Consult Philippine counsel immediately if:

A compromise judgment or writ of execution has been received
The 15-day period from notice of judgment may still be running
Property is about to be transferred, auctioned, demolished, or surrendered
Bank accounts or wages face garnishment
Settlement money has already been accepted
Forgery, falsified notarization, concealment, or collusion is suspected
The compromise involves land, an estate, a minor, a corporation, a government entity, or several co-owners
A lawyer or representative settled without instructions
The court or tribunal has scheduled approval, execution, or implementation

Bring the complete case record and proof of all relevant dates. Procedural deadlines are often counted from notice, knowledge, or entry of judgment, and choosing the wrong remedy can forfeit an otherwise substantial objection.

Frequently asked questions

Is a compromise automatically void if no written SPA was attached?

No. The general rule is that the required authority must be express and clearly proved; it is not invariably required to be written. Writing is nevertheless mandatory in particular settings, including representation at pre-trial under Rule 18 and an agent’s sale of land under Article 1874.

Can counsel negotiate without authority to sign?

Counsel may discuss possible terms, but cannot bind the client to a final compromise without special authority. The client may instead sign the final agreement personally.

Does a notarized SPA conclusively prove authority?

No. Notarization generally strengthens the document’s evidentiary status, but it does not enlarge the powers actually written in it, cure forgery, revive expired authority, or authorize acts expressly excluded by the principal.

Can a principal approve the compromise afterward?

Yes. Express or implied ratification can make an otherwise unenforceable compromise binding. Acceptance and retention of benefits, execution of a quitclaim, or informed acts adopting the settlement may amount to ratification.

Does the defective compromise bind the people who personally signed it?

It may. Lack of authority for one person does not necessarily release valid signatories. Whether the remaining obligations survive depends on the wording, severability, and intended reciprocity of the agreement.

Can one co-heir or co-owner settle for everyone?

Not merely because of the family or co-ownership relationship. Each person must sign, validly authorize a representative, or later ratify the settlement, unless another lawful source of representation applies.

Can a court-approved compromise still be challenged?

Yes, but only through an appropriate and timely remedy. Because a compromise judgment is generally immediately executory and not subject to an ordinary appeal, the approving court’s order, receipt date, grounds for challenge, and applicable forum rules must be reviewed at once.

Official legal sources

This article provides general Philippine legal information, not legal advice for a particular dispute. Outcomes depend on the SPA, compromise, case record, conduct of the parties, and applicable forum rules. Sources and procedures were checked as of July 27, 2026.