Deals & Cases
Confirmation of Non-Existence of a Parent-Child Relationship Litigation Assistance | The Claim in the Litigation to Confirm the Non-Existence of a Parent-Child Relationship Was Granted
The client, who requested a consultation regarding a lawsuit for confirmation of non-existence of a parent-child relationship, requested assistance after discovering an unknown person registered in the family relation register while proceeding with inheritance following the death of the client's father.
1. The Client Who Sought Us Out to File Litigation to Confirm the Non-Existence of a Parent-Child Relationship

This is a case in which the client who brought a confirmation of non-existence of a parent-child relationship lawsuit, through the assistance of a family law specialist attorney, proceeded with the confirmation of non-existence of a parent-child relationship lawsuit, obtained the desired result, and was able to proceed smoothly with the inheritance procedures.
The Circumstances of the Case as Identified by the Family Law Attorney
In the past, the client's father had, at the request of his remarried spouse, temporarily registered in the family register a child that the woman had brought with her.
It was a temporary measure for the child's school enrollment, and several decades passed thereafter without any contact with the child.
Recently, while preparing the inheritance procedures after his father's death, the client discovered that a person he did not remember was registered as a child in the family relations register.
This created the possibility of an unexpected inheritance dispute, and the client therefore sought out a family law attorney in order to pursue a lawsuit for confirmation of non-existence of a parent-child relationship.
2. How to File Litigation to Confirm the Non-Existence of a Parent-Child Relationship
A lawsuit for confirmation of non-existence of a parent-child relationship is a procedure for legally establishing that no actual blood relationship exists between a person registered as a legal child and another.
Under Article 865 of the Civil Act, if it can be proven that no actual parent-child relationship exists, confirmation may be sought from the court.
In sensitive situations such as inheritance in particular, a prompt response is necessary.
① A person who may file a lawsuit under the provisions of Articles 845, 846, 848, 850, 851, 862, and 863 may file a lawsuit for confirmation of the existence or non-existence of a parent-child relationship on other grounds.
How to Secure Evidence to Confirm the Non-Existence of a Parent-Child Relationship
A lawsuit for confirmation of non-existence of a parent-child relationship proceeds by conciliation or adjudication of the family court, and in this case the burden of proof lies with the plaintiff who filed the suit.
Accordingly, it is very important to prove, through objective evidence, that there is no blood relationship.
The key evidence that may be used in the lawsuit is as follows.
∙ Circumstantial materials at the time of birth
∙ Obstetrics and gynecology and hospital medical records
∙ Witness statements and other materials such as texts and messages
3. The Family Law Attorney's Strategy for Litigation to Confirm the Non-Existence of a Parent-Child Relationship

Before bringing a lawsuit for confirmation of non-existence of a parent-child relationship, the family law attorney organized the issues of the case as follows.
- Determination of the proper respondent and the filing period for a lawsuit for confirmation of non-existence of a parent-child relationship brought after the death of the deceased
On the basis of these issues, the family law attorney prepared the lawsuit centering on a strategy of clarifying the facts and proving the matter through genetic testing.
Family Law Attorney's Assistance (1) | Comprehensive Review of the Family Relations Register and Removed Family Register
The family law attorney closely analyzed official documents such as the family relations register and the removed family register in order to ascertain how the defendant had come to be registered as a child of the deceased.
He concentrated on demonstrating that the registration in the family register had not been a voluntary adoption or a proper birth report, but a formal report made simply for convenience.
Family Law Attorney's Assistance (2) | Application for a Commissioned Genetic Examination
To objectively prove that the parent-child relationship did not actually exist, a genetic test was requested through the court.
The result of the DNA comparison of the defendant confirmed that there was no biological parent-child relationship, and this served as the key evidence in the litigation.
Family Law Attorney's Assistance (3) | Proving the Severance of the Factual Living Relationship
The attorney emphasized that there had been no contact or interaction whatsoever between that defendant and the deceased for decades.
Proving that there were no materials supporting the maintenance of any relationship, such as telephone calls, visit records, or messages, the attorney persuasively presented to the court that no substantive family relationship had existed.
4. Litigation to Confirm the Non-Existence of a Parent-Child Relationship Outcome, 'A Parent-Child Relationship Does Not Exist'

Based on the arguments and proof of the family law attorney who handled the lawsuit for confirmation of non-existence of a parent-child relationship, the court legally confirmed that no parent-child relationship existed between the deceased and the defendant.
Accordingly, the plaintiff’s claim was granted in full, and the legal uncertainty in the inheritance relationship was also able to be resolved.
If You Need to Resolve a Family Law Matter
A family case is a complex matter that goes beyond mere legal determination, with an individual's life and emotions deeply intertwined.
The more sensitive such a case is, the more important it is to diagnose it properly from the outset and respond systematically.
Through a system of dedicated consultation lawyers who accurately analyze various case types, Daeryun Law Firm quickly grasps the core of a case from the initial stage.
Based on an accurate diagnosis, the firm assigns an experienced lawyer for each case type and takes prompt and accurate measures even in urgent situations.
Once the diagnosis is complete, an expert and group suited to the case is assigned, working together as a team rather than alone to seek a solution.
If you need to resolve a family case, please request your case at any time through a 🔗legal consultation reservation.
Check out video content
related to this case as well.
Case studies on understanding inheritance and gift taxes and utilizing the family business succession system

This content is based on actual cases handled by Daeryun Law LLC and has been partially adapted. All copyrights belong to Daeryun Law LLC.
Unauthorized reproduction, copying or distribution may result in legal action under applicable laws.
Confirmation of non-existence of biological parentage: Want a faster, more detailed consultation?
Consult aspecialized attorney
Related Information
Explore legal information related to this case.
The Criteria for Exemption From Inheritance Tax on a Residence, the Calculation Method, and Matters to Confirm Before Reducing Taxes
Procedures for Inheriting Property: Guidance on the Order of Heirs and the Deadlines for Qualified Acceptance and Renunciation
The Procedure for Qualified Acceptance of Inheritance, the Documents to Prepare, and Methods of Resolving Inherited Debt
Daeryun's Key Strengths

Litigation strategy using Daeryun's own AI & IT technology
More than 240 key members
1,200+ cases handled per month
* 2025년 월평균 기준
Complies with Korean Bar Association Advertising Regulations Article 4 (1)
more strengths
Book a legal
consultation with an attorney
All consultations are reviewed by a specialized attorney first,
so they are conducted by appointment only.
Phone consultation
1800-7905
Available 24 hours a day, 365 days a year


Online consultation
We provide tailored
legal services for our clients.

Chat consultation
KakaoTalk channel
Daeryun Law LLC Attorneys
Related Members
View moreKey Case Studies
View moreRelated Practice Areas
View moreConsult in other languages
Popular Columns
View moreAssessing the Requirements for a Claim to Return the Reserved Portion: The Procedure and How to Secure Evidence

Inheritance and Gift: The Concepts and How to Calculate and File Inheritance Tax and Gift Tax

Proposed Tax Law Amendments: Reasons for the Amendments and Key Amended Provisions

Guide to the Procedure for Applying for an Adult Guardian: How Do You Prepare the Documents?

Renunciation of Inheritance and Qualified Acceptance, Explained by an Attorney Handling Renunciation of Inheritance

Previous
Narcotics Attorney Assistance Case | Acquittal for Purchase of Narcotics and Suspended Sentence for Use
Next
Trade Secret Protection Act | A Provisional Injunction Application for Violation of the Trade Secret Protection Act, with All Claims Dismissed
View listDo you have more questions?














