Intellectual property assets are registered in official national and international registers. Those registers record who filed, what was filed, and whether the right is currently in force. Control over an IP asset — who can license it, who can block a transfer, who holds a pledge over it — is a separate question. The sources that answer the first question do not always answer the second.
The angle here is control: what the official record shows about who holds the asset, who can enforce it, and what a shareholder or acquirer can actually compel.
What the sources showFiling party, registration date, current status (active, lapsed, opposed), and recorded assignments. Source: national IP office registers and WIPO PATENTSCOPE / TMview · verified 2026-09-01 Condition of accessMost national IP registers are publicly searchable without registration. International databases (WIPO, EUIPO) are free to query by name or number. What the sources do not showUnrecorded licences, pledges registered outside the IP office, beneficial ownership of the holding entity, and contractual restrictions on transfer. Registry facts availableNo exact tariff or fee data is available for this row. Mechanisms are described without figures.Every national IP office maintains a register of granted rights. The register records the applicant or owner of record, the filing and grant dates, the scope of protection (classes, claims, territory), and any recorded changes of ownership or encumbrances.
International systems extend this coverage. WIPO PATENTSCOPE covers PCT patent applications. The EUIPO database covers EU trade marks and Community designs. TMview aggregates trade mark data from participating national offices. These databases are publicly searchable at no charge.
What the register records is the legal owner of record at the time of the last recorded transaction. That is not always the economic owner, the controlling party, or the party with the right to license.
Three gaps appear consistently across jurisdictions:
Control analysis requires cross-referencing the IP register against the commercial register of the owning entity, any UCC or equivalent filings, and available transaction documents.
The registered owner of an IP asset is the entity named in the IP office's current record. That entity may be a holding company, a special-purpose vehicle, or an operating subsidiary. The shareholder who controls that entity controls the asset — but that relationship is established through the corporate register, not the IP register.
For an acquirer, the relevant questions are:
The IP register answers the first question partially. It does not answer the others without supplementary sources.
Where the owning entity is a company, the corporate register of that entity's jurisdiction shows directors, shareholders, and — in jurisdictions with a public beneficial ownership register — the ultimate beneficial owner. That layer is separate from the IP register and must be pulled independently.
The filing date in the IP register is a legal fact. It establishes priority against later filers in the same class and territory. For patents, it determines the start of the protection term. For trade marks, it anchors the seniority claim.
The record also shows:
What the record does not show is whether the right is being actively used. In trade mark law, non-use is a ground for cancellation in most jurisdictions — but the register does not flag non-use. That determination requires evidence of use gathered outside the register.
For patents, the register shows whether maintenance fees have been paid (in jurisdictions where lapse for non-payment is recorded). It does not show whether the patent is being worked or whether it is subject to a compulsory licence that has not been recorded.
A company operating across multiple jurisdictions may hold IP rights registered in each of those jurisdictions separately, plus international registrations under the Madrid System (trade marks) or PCT (patents). No single database aggregates all of these into a unified ownership record.
Coverage gaps arise in several ways:
For a cross-border asset verification, the scope of the IP register search must be defined by the jurisdictions in which the target operates or has filed — not by the jurisdiction of incorporation alone.
An IP asset can be pledged as collateral. The register in which that pledge is recorded varies by jurisdiction:
A clean IP register record does not confirm that the asset is unencumbered. It confirms only that no encumbrance has been recorded at that office. The supplementary search — commercial register, financial register, or both — is required to complete the picture.
A licence granted by the IP owner to a third party is a contractual right. In most jurisdictions, licences are not required to be recorded in the IP register to be valid between the parties. An exclusive licence may give the licensee rights that survive a transfer of the underlying IP — but the register will not show it.
Recorded licences do appear in some registers. Where they appear, the record shows the licensee, the territory, and sometimes the duration. Where they do not appear, the only way to establish whether a licence exists is through contractual due diligence: reviewing the IP owner's agreements.
For an acquirer, an unrecorded exclusive licence in a key territory is a material encumbrance. The IP register search establishes what is recorded. It does not establish what is not.
The IP register establishes ownership of record, filing date, current status, and recorded transactions. It does not establish:
The ceiling of what the sources allow is stated before any engagement. Where the record ends, the analysis names the gap — it does not paper over it.
This is the structural limit of register-based IP verification. It applies regardless of jurisdiction. The sources are authoritative for what they record. They are silent on what they do not require to be recorded.
Discrepancies between sources are themselves findings. Common patterns:
Where sources disagree, the discrepancy is reported as a finding, not resolved by choosing one source over another.
What does an IP register search establish about control? The search establishes who is the recorded owner, when the right was filed and granted, and what transactions have been recorded against it. Control — in the sense of who can license, pledge, or transfer the asset — requires cross-referencing the IP register with the corporate register of the owning entity and any applicable financial or commercial registers.
Does a clean IP register record mean the asset is unencumbered? No. It means no encumbrance has been recorded at that IP office. Pledges may be registered elsewhere. Licences may exist by private contract. A complete encumbrance check requires searching the relevant commercial and financial registers in addition to the IP register.
Can IP ownership be verified across multiple jurisdictions in one search? No single database covers all jurisdictions. International databases (WIPO, EUIPO, TMview) cover their respective scopes. National registrations outside those systems require direct queries to each national office. The scope of the search must be defined by the jurisdictions in which the target holds or may hold rights.
What happens when the IP register and the corporate register show different owners? That discrepancy is a finding. It may indicate an unrecorded assignment, a corporate restructuring that transferred the right by operation of law, or an error in one of the registers. The analysis reports the discrepancy and identifies which record is more recent and what the likely cause is — without resolving it by assumption.
Is domain name ownership part of an IP register search? Domain names are not IP registrations. They are recorded in WHOIS databases. WHOIS privacy services frequently mask the registrant. Domain ownership is verified through a separate WHOIS query and, where privacy services are active, through registrar disclosure procedures. It is not part of the IP office record.
Disclaimer: This report is a factual compilation from official registers and public sources. It is provided for informational purposes only, does not constitute legal advice, and contains no legal qualification of the facts established. VLO Law Firm assumes no liability for actions taken or not taken based on this material. For advice regarding your particular situation, please contact info@vlolawfirm.com.
Author: James Whitfield — Partner, UK & Common Law, VLO Law Firm