Can Opening Competitor Mail Lead to Criminal Liability?

Introduction

Opening or taking a rival company’s physical letters, proposals, contracts, or other business documents to learn its commercial plans may expose the offender to criminal and civil liability. Philippine law specifically penalizes the seizure of another person’s papers or letters when done to discover secrets, particularly when the contents are revealed.

The offense is separate from ordinary business competition. A company may lawfully study publicly available information, negotiate with customers, or conduct market research. It may not, however, obtain confidential information by unlawfully taking and examining private correspondence.

What crime applies to seized competitor correspondence?

The specific offense is discovering secrets through seizure of correspondence under Article 290 of the Revised Penal Code, as amended by R.A. No. 10951.

The provision applies to a private individual who, for the purpose of discovering another person’s secrets, seizes that person’s papers or letters and reveals their contents. The law also recognizes a lesser penalty when the offender seizes the correspondence to discover its contents but does not reveal the secret.

Article 290, as amended by R.A. No. 10951, provides for the following penalties:

• When the contents are revealed: prision correccional in its minimum and medium periods, plus a fine not exceeding P100,000.
• When the contents are not revealed: arresto mayor, plus a fine not exceeding P100,000.

Article 290 originally imposed a fine not exceeding P500. R.A. No. 10951 increased the fine to a maximum of P100,000.

Elements of the offense

For criminal liability under Article 290, the prosecution must establish the following circumstances:

1. The accused is a private individual.
2. The accused seized another person’s papers or letters.
3. The seizure was made to discover the secrets of another person.
4. The contents were revealed, or the correspondence was seized but the secret was not revealed.

The prosecution must prove more than mere possession of a document. The act must involve a seizure, and the seizure must be connected with the purpose of discovering a secret. If the contents were subsequently disclosed, the more serious form of the offense may apply.

What counts as “seizure”?

Seizure generally involves taking, holding, or exercising control over papers or letters without the authority of the person entitled to possess or receive them. The act may be committed by physically removing mail from a desk, intercepting a delivery, taking a letter from a company mailbox, or retaining a document intended for another person.

The law does not require the offender to permanently appropriate the document. Temporary possession may be sufficient if it was done to examine the correspondence and discover confidential information.

Examples may include:

• Taking a sealed envelope addressed to a competitor’s executive from a shared receiving area.
• Removing a rival company’s bid documents from a delivery pouch.
• Opening a letter containing a proposed supplier agreement or pricing plan.
• Photocopying a seized business letter before returning the original.

What is a “secret” under Article 290?

A secret is information that is not generally known and that the person or company reasonably seeks to keep confidential. In a business setting, this may include pricing proposals, supplier terms, customer lists, expansion plans, product specifications, investment plans, or negotiation positions.

Confidential commercial information does not become public merely because it is written in a letter or document. The surrounding circumstances remain important, including the use of a sealed envelope, the identity of the addressee, internal confidentiality markings, and the restricted manner in which the document was transmitted.

Article 290 does not require the prosecution to prove that the information had substantial monetary value. The unlawful purpose of discovering another person’s secret and the seizure of the correspondence are the material concerns.

Must the offender reveal the contents?

No. Disclosure is not necessary for criminal liability in every situation. Article 290 distinguishes between the act of seizing correspondence and revealing its contents, and the act of seizing it without later revealing the secret.

Disclosure may include showing the letter to a competitor, forwarding a photograph of it, reporting its contents to company officers, using the information in negotiations, or communicating the information to a customer or supplier. The form of disclosure is not controlling; what matters is that the confidential contents were made known or used beyond the authority granted by the sender or recipient.

Where the offender did not reveal the contents, the statute provides a lower penalty. The absence of disclosure therefore affects the penalty, but it does not necessarily eliminate the offense.

Statutory exceptions

Article 290 does not apply to certain family and custodial relationships. The exception covers:

• Parents concerning the papers or letters of their children.
• Guardians concerning the papers or letters of minors under their care.
• Persons entrusted with custody of minors concerning the papers or letters of those minors.
• Spouses concerning the papers or letters of either spouse.

These exceptions are expressly limited. They do not create a general privilege for employees, corporate officers, business partners, or persons who happen to share an office or residence with the recipient.

Employer and employee situations

In a company, mail addressed to a corporation may be handled by authorized personnel in the ordinary course of business. An employee who opens correspondence pursuant to a legitimate company procedure does not automatically commit Article 290.

The analysis changes when an employee takes correspondence without authority, opens a sealed letter addressed to a particular person, or examines documents for the benefit of a competing business. Internal access to company premises does not by itself authorize the discovery or disclosure of another person’s confidential communications.

Companies should therefore maintain written rules identifying who may receive, open, scan, copy, and distribute business correspondence. The rules should distinguish mail addressed to the company from personal or confidential mail addressed to a specific officer, employee, client, or business partner.

Relationship with privacy of correspondence

The conduct may also implicate the constitutional protection of the privacy of communication and correspondence. In In Re: Mortel, Administrative Case No. 10117, 2016, the Supreme Court treated the reading of court correspondence addressed to another person as improper and directed the lawyer involved to explain his conduct.

The decision illustrates an important professional and legal principle: a person who receives correspondence intended for another should ordinarily inform the intended recipient rather than read the communication. The fact that the reader claims concern, curiosity, or a desire to protect the recipient does not automatically justify examining the contents.

Article 32(11) of the Civil Code also recognizes a civil action for damages when a public officer, employee, or private individual directly or indirectly obstructs, violates, or impairs another person’s privacy of communication and correspondence.

Electronic messages and intercepted communications

Article 290 concerns papers or letters. Electronic communications may involve different statutory provisions and procedural rules, depending on how the message was accessed, copied, intercepted, or disclosed.

Under the Rules on Cybercrime Warrants, interception of computer data may be carried out only by virtue of a court-issued warrant applied for by law enforcement authorities. A warrant to intercept computer data may authorize listening to, recording, monitoring, surveillance of communications, or procuring computer data while the communication is occurring.

The Rules on Cybercrime Warrants therefore distinguish lawful, court-authorized interception from unauthorized access or monitoring. A company investigating suspected theft of electronic information should preserve evidence and seek proper legal authority rather than conduct an informal interception.

Where intercepted communications are secured in violation of the applicable law, the 2022 Revised Rules and Regulations Implementing R.A. No. 9208 state that the communications and information obtained from them are not admissible or usable as evidence in judicial, quasi-judicial, legislative, or administrative proceedings.

Physical mail and radio communications

Act No. 3846 also prohibits unauthorized persons from intercepting and willfully divulging or publishing the contents, substance, purport, effect, or meaning of certain radio messages or communications. Its application depends on the nature of the communication and the means by which it was transmitted.

For ordinary physical business letters, Article 290 is the more direct provision when the conduct consists of seizing papers or letters to discover another person’s secrets. Other laws may apply if the conduct involves electronic interception, unauthorized computer access, fraud, theft, or the misuse of personal information.

Evidence and proof

A complaint should be supported by evidence showing both the physical act and the offender’s purpose. Relevant evidence may include:

• The envelope, letter, document, or container that was taken or opened.
• Delivery logs, closed-circuit television footage, access records, and building security reports.
• Statements from the sender, recipient, messenger, receptionist, or other witnesses.
• Messages or instructions showing that the document was sought to obtain business information.
• Copies, photographs, scans, or recordings showing that the contents were disclosed.
• Evidence that the information was later used in negotiations or competing business activity.

The prosecution should identify the specific document and explain why it contained a confidential matter. It should also establish that the accused lacked authority to take or examine it.

In Worldwide Web Corporation, et al. v. People of the Philippines, et al., G.R. No. 161106, 2014, the Supreme Court emphasized that a search warrant is not a general warrant when the items to be seized are described with reasonable particularity and have a direct relation to the offense under investigation. This principle is relevant when investigators seek judicial authority to collect physical or digital evidence of unlawful information-taking.

Typical business scenarios

Scenario 1: A sealed letter is taken and read. An employee removes a sealed letter addressed to a rival’s manager, opens it, and reports the proposed pricing terms to his employer. These facts may support the elements of seizure, intent to discover a secret, and disclosure under Article 290.

Scenario 2: A document is found in a public area. A person finds an unsealed document left in a public lobby. Article 290 may be harder to establish if there was no seizure from the possession or control of another person and no evidence that the document was private. The facts surrounding access, custody, and confidentiality remain decisive.

Scenario 3: Mail is opened under company policy. A mailroom employee opens correspondence addressed generally to the corporation under an established receiving procedure. The act is less likely to constitute Article 290 if it was authorized and performed for legitimate company purposes, without an intent to discover another person’s secret.

Scenario 4: Electronic messages are secretly monitored. An employee installs software to capture a competitor’s messages while they are being transmitted. This may involve laws and warrant requirements concerning computer data interception rather than merely Article 290.

Recommended steps for companies

1. Secure the original materials. Place the letter, envelope, document, or device in a secure evidence container and avoid unnecessary handling.
2. Preserve records immediately. Retain delivery logs, access-control records, surveillance footage, email metadata, and relevant messages.
3. Document the chain of custody. Record who found, received, stored, copied, or transferred the material.
4. Do not conduct unauthorized surveillance. A private investigation should not involve intercepting communications or accessing accounts without proper authority.
5. Obtain legal advice before disclosure. Do not circulate the suspected stolen material to employees or third parties unless disclosure is legally justified and necessary.
6. Consider parallel remedies. Depending on the evidence, the company may pursue criminal proceedings, civil damages, injunctive relief, employment sanctions, or contractual remedies.

Final observations

Taking a competitor’s physical letters or documents to uncover confidential business plans can constitute discovering secrets through seizure of correspondence under Article 290 of the Revised Penal Code, as amended by R.A. No. 10951. The central questions are whether the document was unlawfully seized, whether the seizure was intended to discover a secret, and whether the contents were revealed.

Businesses should treat suspected mail interception as an evidence-preservation and legal-compliance matter. Prompt documentation, restricted handling of the material, and proper legal process are safer than retaliation, unauthorized surveillance, or wider distribution of the allegedly confidential information.

About Nicolas and De Vega Law Offices

 Nicolas and de Vega Law Offices is a full-service law firm in the Philippines.  You may visit us at the 16th Flr., Suite 1607 AIC Burgundy Empire Tower, ADB Ave., Ortigas Center, 1605 Pasig City, Metro Manila, Philippines.  You may also call us at +632 84706126, +632 84706130, +632 84016392 or e-mail us at [email protected]. Visit our website https://ndvlaw.com.