If you have just received a UDRP complaint and have not yet responded, read the Quick Answer and the checklist first. The deadline is usually 20 days, and the cost of silence is measurable. This guide explains what happens if you do not respond, what panels do, and how to recover if you have already defaulted.
Quick answer: what happens if you do not respond
If a respondent does not file a response within the deadline, the provider notifies the parties of the default and appoints the panel. The panel then decides the dispute on the complaint and the available record. Under paragraph 5(f) and paragraph 14 of the UDRP Rules, the panel may accept the complainant’s reasonable allegations as true and draw adverse inferences from the respondent’s silence. Default is not an automatic transfer — the panel still reviews the three elements — but in practice it is close. A large-scale analysis of 42,306 UDRP cases between July 2015 and November 2025 found 39,116 default proceedings and identified 1,359 cases in which defaulting respondents lost disputes that were consistently won by participating respondents on comparable facts.
Key facts at a glance
| Fact | Detail |
|---|---|
| Default rate | Respondents file a response in roughly one in three UDRP disputes |
| Dataset | 42,306 UDRP cases; 3,190 contested; 39,116 default (July 2015–Nov 2025) |
| Avoidable losses | 1,359 cases where defaulting respondents lost on facts that participating respondents won |
| Default transfer rate | 94% of default cases end in transfer in one 2026 WIPO sample |
| Rule basis | Paragraph 5(f) and paragraph 14 of the UDRP Rules |
| Adverse inference | Panels may draw adverse inferences from silence |
| Late response | Possible at the panel’s discretion; not guaranteed |
| Recovery | Court action, reopening (rare), negotiation |
The default statistics: 39,116 cases
The 42,306-case dataset
The most comprehensive empirical study of UDRP default is “The Cost of Silence: Quantifying the Prejudice of Non-Participation in Domain Name Disputes” (Adjibi, Kleiman, Bailey & Monrose, ICAIL 2026). The authors analysed 42,306 UDRP cases initiated between July 2015 and November 2025, including 3,190 contested and 39,116 default proceedings. They used large language models and text embeddings to extract and standardise the factual grounds cited by panels, then clustered disputes resolved on substantively similar facts.
1,359 avoidable losses
The central finding: 1,359 cases in which defaulting respondents lost disputes that were consistently won by participating respondents under comparable factual circumstances. In other words, these were not cases where the complainant had an overwhelming case. They were cases where the respondent’s participation would likely have changed the outcome. The study also found systematic differences in the level of factual justification provided in default proceedings, suggesting variation in decision-writing practices that may affect the transparency and perceived fairness of the process.
The 94% default transfer rate
A 2026 WIPO sample of recent cases tracked by alldomains.app found that 94% of default cases ended in transfer, 5% in a refused complaint, 1% in cancellation, and 1% another way. Earlier research reported a 94% complainant success rate in default cases. The convergence of the data is clear: silence is the single strongest predictor of loss.
Why respondents do not reply
The reasons are varied:
- Notice failure. The complaint goes to an email address the registrant no longer uses, or lands in spam.
- Privacy services. The provider must obtain the registrant’s details through the registrar; the registrant may not see the notice in time.
- Unfamiliarity. The registrant may not understand the UDRP, the deadline, or the consequences.
- Language. The proceedings may be in a language the registrant does not read.
- Cost. The registrant may assume a response is too expensive.
- Belief that silence is safe. The registrant may assume that not responding is neutral, or that the complainant must still prove its case.
The data shows that the last assumption is the most costly. The panel still reviews the complaint, but the respondent’s evidence is absent from the record.
1,359 cases were lost to silence. Do not add yours. We assess the defence and build the response before the deadline. Book a deadline review →
What the UDRP Rules actually say
Paragraph 5(f) and paragraph 14
Paragraph 5(f) of the UDRP Rules provides that if the respondent does not submit a response, the panel shall decide the dispute based on the complaint. Paragraph 14(a) provides that in the absence of exceptional circumstances, the panel shall proceed to a decision on the complaint. Paragraph 14(b) provides that if a party does not comply with the Rules or the panel’s orders, the panel may draw such inferences as it considers appropriate.
The rules do not say “automatic transfer.” They say the panel decides on the record and may draw inferences. The panel must still be satisfied that the three elements are made out. But the respondent’s silence removes the evidence that might have created a genuine issue on one or more elements.
The panel’s duty to review the complaint
Panels take their duty to review the complaint seriously. In Vivian Heredia v. Murdoko Perdana (WIPO Case No. D2026-1586), the panel noted that the respondent did not submit a response and proceeded to decide on the complaint, the Policy, the Rules, and the Supplemental Rules “without the benefit of a Response”. In Cousins Submarines v. Sone Murgia (WIPO Case No. D2026-1265), the respondent did not submit a response, and the panel proceeded on the record after the default notification. In Scribd, Inc. v. Abhinav Chauhan (WIPO Case No. DCO2026-0040), the panel proceeded under paragraphs 5(f) and 14(a) after the respondent’s default.
The adverse inference power
The panel’s power to draw adverse inferences is real. In CAC-UDRP-106861, the panel stated that the respondent had defaulted and that the panel was empowered to draw adverse inferences from the default. In CAC-UDRP-107149, the panel noted that the respondent’s default allowed it to draw adverse inferences under Rule 14(b). The practical effect is that the panel may treat the complainant’s uncontradicted factual assertions as true, particularly where they are supported by documents.
What a default is not
A default is not an admission of the complainant’s claims. In UDRP Perspectives, the authors note that a respondent default is not necessarily an admission that the complainant’s claims are true, and that even in no-response cases the panel must still find the three elements. Panels have denied complaints in default cases where the complainant’s evidence was insufficient. But these are exceptions. The general rule is that the unrebutted complaint carries the day.
Default is not an automatic transfer, but it is close. We build the response that gives the panel something to weigh. Get a response plan →
What panels do in default cases
They accept reasonable allegations
The panel may accept the complainant’s reasonable allegations as true where they are not contradicted. This is the core of the adverse inference. If the complainant says the respondent offered to sell the domain for US$50,000, and the respondent does not deny it, the panel may accept it.
They still test the three elements
The panel still reviews the complaint for legal sufficiency. It must be satisfied that the domain is confusingly similar, that the respondent has no legitimate interest, and that the domain was registered and used in bad faith. A complaint that fails on the facts or the law will be denied, even in default.
They may verify the record independently
Panels may consult public databases, visit the website, and check the Wayback Machine. In CAC-UDRP-105436, the panel checked the USPTO website and found the complainant’s application was pending, not registered, which was decisive. A defaulting respondent cannot rely on the panel to find the gaps in the complainant’s case, but the panel’s independent research may still help.
The 2026 default decisions
The 2026 WIPO decisions illustrate the pattern:
- Vivian Heredia v. Murdoko Perdana — default; panel decided on the complaint.
- Scribd, Inc. v. Abhinav Chauhan — default; panel proceeded under 5(f) and 14(a).
- Cousins Submarines v. Sone Murgia — default; panel decided on the record.
- Lumiforte Holding B.V. v. lianxin zhou — default; panel decided on the complaint.
These are routine cases, not outliers. The default docket is the majority of the UDRP.
The cases that are lost to silence
Legitimate-interest defences
A respondent with a bona fide offering, commonly known status, or fair use has a defence that only the respondent can document. In default, that evidence never reaches the panel. The 1,359 cases in the “Cost of Silence” dataset are, in significant part, cases where the respondent had a legitimate-interest story that was never told.
Priority and genuine registration
A respondent who registered the domain before the complainant’s mark, or for a genuine reason (a surname, a place, an ordinary word, a business name), has a priority defence. But the panel needs the evidence: the registration date, the reason for the choice, and the absence of targeting. In default, the panel sees only the complainant’s timeline.
Descriptive terms and fair use
A domain that uses a descriptive or generic term for its ordinary meaning may be a fair use. In ppptreatmentkit.com, the panel denied transfer because the respondent used the descriptive term to sell actual products. That outcome depended on the respondent’s evidence. A defaulting respondent in the same position would likely have lost.
The “same facts, different outcome” problem
The core finding of the “Cost of Silence” study is that factually equivalent disputes produce different outcomes depending on whether the respondent participates. The study clustered disputes on semantically similar facts and found 1,359 cases where defaulting respondents lost but participating respondents won on comparable facts. The implication is stark: the outcome is not just about the facts; it is about whether the facts are put before the panel.
Do you have a legitimate-interest story? It only matters if the panel sees it. We test the defence and build the evidence before the deadline. Get a defence assessment →
How to respond late
The four-day extension
The UDRP Rules allow the respondent to request an automatic four-day extension under paragraph 5(b). The request must be made to the provider before the original deadline. The extension moves the due date from Day 20 to Day 24.
Late responses and panel discretion
A response filed after the deadline is a late response. The panel has discretion to accept it. The factors include:
- The length of the delay.
- The reason for the delay.
- Whether the complainant objects.
- Whether the late response would prejudice the complainant.
- Whether the panel has already begun its deliberation.
Late responses are not guaranteed to be admitted. A response filed after the panel has been appointed and has started work is less likely to be accepted than one filed shortly after the deadline.
What to say in a late response
A late response should:
- Explain the delay — notice failure, language, illness, a family emergency, or a genuine inability to access the file.
- Show that the delay was not tactical — the respondent acted promptly once it became aware of the proceeding.
- Address the merits — the panel is more likely to admit a late response that gives it something substantive to weigh.
- Request the panel’s acceptance expressly — do not assume the panel will admit it.
The de novo review option in URS
The URS has a different safety valve. A defaulting registrant can seek de novo review from the provider within six months of the default, with an option to request an additional six months. This is a genuine second chance, but it is not available under the UDRP.
Missed the deadline? Act now. Late responses are possible but not guaranteed. We assess the delay and the merits together. Get urgent deadline help →
How to recover after a default decision
Court action
The UDRP does not prevent either party from going to court. A respondent that lost by default can sue the complainant in a court of competent jurisdiction. The court is not bound by the UDRP decision. This is the most robust recovery route, but it is expensive and slow, and the standard of review depends on the jurisdiction.
Reopening the UDRP
Some providers allow a request to reopen a UDRP proceeding in exceptional circumstances, such as a failure of notice or new evidence that could not have been discovered earlier. Reopening is rare. The provider’s supplemental rules set the test.
Negotiation with the complainant
A respondent can negotiate with the complainant after the decision, but the leverage is reduced. The complainant has a transfer order; the respondent has a court route that may or may not succeed. A negotiated outcome — a payment, a licence, or a transition period — may be better than the alternatives.
The limits of each route
- Court is the strongest route but the most expensive.
- Reopening is rare and discretionary.
- Negotiation depends on the complainant’s willingness.
- Prevention — responding on time — is the only reliable cure.
Default in ccTLD procedures
Nominet DRS summary decision
If the respondent does not respond, the Nominet DRS bypasses mediation entirely and moves the case directly to a summary expert decision. The complainant pays £200 plus VAT, and the expert certifies that the complainant has made out a prima facie case on both Rights and Abuse. There is no written decision, but the outcome is recorded on Nominet’s website. The summary decision is cheaper and faster than a full decision, but it is still a binding outcome against the respondent.
CDRP affirmative evidence rule
The CDRP is the outlier in the other direction. A default does not automatically prove the absence of a legitimate interest. Panels will not simply assume that silence proves the element. Complainants must build an affirmative prima facie case — including evidence of the registrant’s lack of any plausible claim to the name — rather than relying on the default to carry the element. The practical effect is that a thin CDRP complaint may fail even against a silent respondent.
SACI-Adm revelia and freezing
If the respondent does not file a response, revelia (default) is configured. The Secretariat notifies NIC.br, which has three days to contact the registrant through the email addresses in the domain registration. If the registrant does not respond within 24 hours, the domain is frozen (suspended) until the procedure concludes. The freeze is a procedural step, not a final remedy, but it takes the domain offline immediately.
INDRP ex parte award
If the respondent does not respond, the arbitrator proceeds ex parte and decides on the complaint alone. The award binds the registrant regardless. In practice, a large share of INDRP complaints go undefended. The respondent’s only post-award route is a challenge in the Delhi High Court under the 1996 Act.
CNDRP and usDRP
Under the CNDRP, the panel proceeds on the complaint but still applies the three-element test. Under the usDRP, a default is not an automatic transfer — the panel must still find all three elements — but a default eliminates every defence the registrant might have raised.
Default rules differ by policy. We map the consequence and the recovery route for the specific procedure. Talk to counsel →
Why default is a choice, not a strategy
The data is unambiguous. 39,116 default proceedings in ten years. 1,359 cases where defaulting respondents lost on facts that participating respondents won. 94% of default cases ending in transfer. The UDRP’s default mechanism is not a neutral omission; it is a structural advantage for the complainant.
The good news is that the default is avoidable. The 20-day window is short, but it is enough to:
- Preserve the evidence.
- Assess the three elements.
- Identify the strongest defence.
- File a response.
The 1,359 cases in the “Cost of Silence” dataset are not cases where the respondent had no case. They are cases where the respondent had a case and did not tell the panel. That is the cost of silence.
Silence is not neutrality. It is a decision to let the complainant’s version stand. Get a response plan before the deadline →
The 20-day response checklist
- Identify the date of commencement from the provider’s notice.
- Calculate the deadline: 20 days, plus a possible 4-day extension.
- Request the extension immediately if you need it.
- Preserve evidence: website captures, registration records, invoices, contracts, correspondence, advertising, trademark records.
- Do not contact the complainant directly without advice.
- Assess Element 1: Is the mark descriptive or weak? Is the domain’s dominant element different?
- Assess Element 2: Do you have a bona fide offering, commonly known status, or fair use?
- Assess Element 3: Did you register before the mark? Do you have a genuine reason for the name? Is there evidence of targeting?
- Consider RDNH: Is the complaint abusive?
- Decide on panel composition: single or three-member?
- Draft the response within the word limit.
- File on time and keep proof of filing.
The checklist takes 20 minutes. The default lasts for the life of the domain. Book a deadline review →
How counsel.domains can help
If you have just received a complaint, we review the deadline, preserve the evidence, and build the response around the strongest element.
If you have missed the deadline, we assess late-response options and the merits together.
If you have defaulted and lost, we assess court, reopening, and negotiation routes.
If the case involves a ccTLD, we apply the specific default rules — summary decision, revelia, ex parte, or affirmative evidence — that govern that procedure.
counsel.domains Domain names, worldwide. Get urgent deadline help → · [email protected]
Disclaimer: This website provides general information about domain name dispute resolution. It is not legal advice and does not create a professional relationship. Procedures and fees change; check the relevant policy and provider before acting. counsel.domains is not affiliated with WIPO, ICANN, Forum, Nominet, auDA, CIRA, EURid, NIXI, CNNIC, NIC.br, or any registry or dispute-resolution provider.