A patent assignment in Israel can transfer ownership of a granted Israeli patent or a pending Israeli patent application, whether through a commercial transaction or by operation of law. Israeli law distinguishes the agreement between the assignor and assignee from the registration of the transfer in the Patent Register. An assignment made by agreement is not effective against third parties unless it is registered as required by law. Signing an acquisition or assignment agreement is therefore not necessarily the final step in transferring the rights.
The Israel Patent Office’s official patent ownership transfer service covers both granted patents and pending applications. Recordal normally requires an assignment instrument or agreement, an official fee for each application or patent and, where the assignee is represented, a power of attorney. Recordal with the Israel Patent Office does not automatically update ownership in other jurisdictions.
For international companies, investors and foreign patent counsel, the principal questions are whether title has passed between the parties, whether that change has been entered in the Israeli register, and whether existing licenses, security interests or third-party claims affect the rights being acquired.
Patent Assignment Versus Patent Licensing in Israel
A patent assignment changes the identity of the owner of the rights being transferred. The assignee succeeds to the assigned interest, subject to the relevant agreement and enforceable obligations. A patent license, by contrast, authorizes another person or entity to exploit the invention on specified terms without necessarily transferring ownership of the patent.
The distinction has consequences for enforcement, renewal fees, control of commercialization and the ability to grant further rights. A technology company may assign all patents relating to a manufacturing process to a purchaser, or retain ownership and grant a manufacturer an exclusive license for a defined period or territory.
The title of the agreement is not decisive. Counsel must examine which rights are actually transferred, in which jurisdictions, whether the assignment is complete or partial, and whether the recipient may license or assign those rights further.
Sections 82–83 of the Israeli Patents Law: Assignment and Effect Against Third Parties
Section 82 of the Israeli Patents Law, 5727-1967, provides for the transfer of rights in an invention or patent by a written instrument and recognizes transfers by operation of law. Section 83 provides that a patent transfer under an agreement is ineffective against persons who are not parties to that agreement unless the transfer has been registered in accordance with the Law.
The contractual position as between assignor and assignee may therefore differ from the position of third parties relying on the Patent Register.
In Rosenberg v. Rubinstein, Civil Appeal 520/80, PD 38(1) 85 (1984), the Israeli Supreme Court held that the writing requirement under Section 82 was evidentiary rather than an essential condition for the existence of the transaction between the parties. That ruling did not remove the separate requirement under Section 83 concerning effectiveness against third parties.
From a transaction-planning perspective, the prudent approach remains a signed, sufficiently specific assignment instrument identifying the rights and the relevant Israeli patent or application numbers. The distinction between contractual effect and third-party effectiveness is discussed in Yonatan Drori, Patent Law (Hebrew, 2023), Chapter 13, Section 13.2.1.2.
Can Ownership of a Pending Israeli Patent Application Be Transferred?
Yes. Section 169 of the Patents Law and the Patent Office’s administrative guidance permit ownership changes to be recorded for an Israeli application while examination is still pending. A company transferring its Israeli application to an investor or a subsidiary therefore need not wait until a patent is granted.
The documents should identify the application number, the relevant parties and the assigned interest. The agreement should also address responsibility for prosecution, claim amendments, divisional applications and future filings, where relevant.
If no Israeli patent application has yet been filed, the parties may contractually allocate rights in the invention and obligations concerning future filings. However, there is no existing Israeli application record in which to register a change of ownership.
Even where a pending application is transferred, there is no guarantee that it will be granted or that the final claims will cover the commercially intended technology. These risks may affect valuation, payment milestones and representations in the assignment agreement.
Documents and Official Fees Required for an Israeli Patent Assignment
According to the Israel Patent Office’s official service instructions, an application to record ownership transfer requires an assignment instrument or agreement, evidence of payment of the prescribed fee under Item 7(c) of the Second Schedule to the Patents Regulations for each patent or application, and a power of attorney from the assignee if represented.
If a general power of attorney has already been filed in another Israeli patent matter, the relevant file number may be provided in accordance with the Patent Office’s instructions.
The supporting documents should clearly identify the assignor, the assignee, the relevant application or patent numbers and the scope of the transfer. A transaction covering several Israeli patents or applications may require a separate official fee for each file even if all rights are transferred under a single agreement.
Official fees should be checked at the time of filing rather than taken from older schedules or client estimates. Professional fees for preparing or reviewing the assignment and handling the recordal are separate from the Patent Office’s charges.
How to Record an Assignment with the Israel Patent Office
Companies and represented applicants submit recordal requests electronically through the Israel Patent Office’s patent system. The request is made in the relevant patent or application file under the register-change category, selecting the request type for transfer of ownership.
The required supporting documents are uploaded in PDF format, and the prescribed official fee is paid. After submission, the parties should confirm that the Patent Register was actually updated, rather than relying only on proof of payment or acknowledgement that a request was received.
For unrepresented individuals, the official service guidance identifies additional filing channels subject to the applicable conditions.
Where an assignee is located outside Israel, an address for service in Israel or a representative may be required. Once recordal is completed, counsel should verify the assignee’s precise legal name and current contact details in the register so that future notices concerning the application or patent reach the correct entity.
Company Name Changes, Mergers, Inheritance and Transfers by Operation of Law
A change in a company’s shareholders does not necessarily transfer a patent owned by that company to another legal entity. Similarly, a change in the legal name of the same entity is not necessarily a patent assignment.
The Patent Office provides a separate service for recording an owner’s name change or reporting a merger. Correction of an error in recorded owner details may instead require an application under Sections 170–171 of the Patents Law, using the appropriate record-correction procedure.
Patent rights may also pass through inheritance, liquidation, a court order or another legal mechanism. Where a transfer is based on a foreign court judgment, probate order, will or corporate document, authenticated records, translations or further evidence of legal entitlement may be needed. The parties should not assume that a foreign instrument will automatically be recognized for recordal in Israel without examination.
These distinctions are examined in Drori, Patent Law (2023), Section 13.2.2.
Joint Owners, Existing Licenses and Security Interests
Before acquiring an Israeli patent, the purchaser should determine whether the patent is held by one owner or jointly owned, the interest held by each party and whether agreements or registered restrictions affect the ability to assign the rights.
An assignment signed by one joint owner does not necessarily convey the interests of the other owners. The buyer should also examine existing licenses, pledges, attachments and contractual undertakings, including covenants not to sue or restrictions on further licensing.
The transfer of ownership does not automatically extinguish every third-party right. Accordingly, the administrative recordal process should be accompanied by substantive patent due diligence in Israel, including a review of the chain of title from the inventors to the current owner, registered security interests, license agreements and pending disputes.
The Patent Office also provides procedures concerning patent pledges and related registered interests. Such records may be relevant when identifying encumbrances and assessing what rights the assignee will receive.
Disputes over Patent Ownership: Agreements, Recordal and Competing Claims
In Triple Plus Ltd. v. Goliklas Ltd., Tel Aviv District Court, IP Appeal 50544-10-19 (27 October 2020), the court ordered ownership of a patent application to be transferred on the basis of an express contractual provision that preserved intellectual property rights in the hands of the development company even after termination of the underlying agreements. Separate monetary claims between the parties were not resolved by the ownership determination.
Where one party claims to have purchased a patent and the other continues to represent itself as the owner, two questions must be separated: what the parties agreed, and who is recorded in the Patent Register. Section 82 governs the transfer of rights; Section 83 addresses effectiveness against third parties where an assignment made by agreement has not been recorded.
Failure to record a transfer does not, in itself, determine every contractual dispute between assignor and assignee. Conversely, the existence of a binding agreement does not replace registration where the law requires it for effectiveness against third parties.
When the Assignor Disputes the Transfer or Refuses to Sign
A dispute may arise because the transfer was conditional on a payment that was not completed, the parties disagree over which patent applications formed part of the transaction, or the registered owner refuses to execute the recordal documents.
The initial review should cover the relevant agreement, conditions precedent, assignment instruments and correspondence. Failure to sign an administrative form does not necessarily show that no binding contractual assignment occurred, just as a general contractual reference to intellectual property does not necessarily cover every patent owned by a company.
Where enforcement of contractual obligations or an order requiring execution of documents is necessary, court proceedings may be required instead of, or in addition to, an administrative request to amend the register.
Competing Assignees, Existing Licenses and Breaks in the Chain of Title
Another problem can arise when a patent owner promises the same rights to successive purchasers, or where a purchaser expects exclusivity inconsistent with a previously granted license. The dates and terms of each transaction, the dates of recordal and the rights of the relevant third parties must be assessed.
Under Section 87, an unregistered license is not effective against persons who were not parties to it. That principle does not automatically resolve every contractual dispute involving non-assertion commitments or covenants not to sue. The precise rights granted and the parties entitled to rely on them remain central.
Joint Ownership and Disagreement Between Co-Owners
Section 80 generally allows a co-owner of a patent to transfer that co-owner’s share without the consent of the others, unless a different arrangement has been agreed and recorded. By contrast, Section 88 requires the consent of all co-owners to grant a license, subject to the court’s authority under Section 81.
An objection by one co-owner to another co-owner’s assignment is therefore not necessarily equivalent to an objection to licensing. The legal analysis depends on whether the transaction transfers an ownership interest, grants a right of use or concerns a cooperation obligation established by agreement.
The identity of the party entitled to sue for patent infringement may also be affected by ownership. Section 178 addresses the rights of patent owners, co-owners and exclusive licensees to bring infringement proceedings. An action to enforce an assignment agreement is nevertheless distinct from an infringement action. Their relationship to available remedies is discussed under Patent Litigation in Israel.
Does an Israeli Patent Assignment Cover the International Patent Family?
Recordal at the Israel Patent Office changes the registered ownership of the Israeli patent or application only. It does not automatically record ownership changes at the USPTO, the European Patent Office, WIPO or the national patent offices of other countries.
Where the transaction covers a PCT application, US patents, European patent rights or additional national filings, the parties must examine the separate assignment and recordal requirements applicable to each jurisdiction.
The agreement should identify the patents and applications covered, the effective date of assignment, the consideration, the parties’ obligations to execute further documents and responsibility for official fees and professional costs.
It should also address pending patent infringement claims, renewal fees, future prosecution decisions and rights in subsequent developments. Recordal alone does not resolve the commercial obligations, just as the agreement alone does not replace registration in jurisdictions where such recordal is required.
For international acquisitions and restructurings, the reliable approach is to coordinate the contractual assignment and the recordal of the chain of title in each relevant patent office. Further analysis of contractual transfer and effectiveness against third parties, including Rosenberg v. Rubinstein, appears in Yonatan Drori, Patent Law (Hebrew, 2023), Chapter 13, Sections 13.2.1–13.2.2.
