There is a particular kind of legal reform that changes not just the rules but the underlying logic of a system. Tanzania’s Written Laws (Miscellaneous Amendments) Act, 2026 contains exactly that kind of reform for trade mark law — and it fits in a single sentence.
A trade mark registered under the ARIPO Banjul Protocol on Marks and designating Tanzania is now deemed to be registered under Tanzanian domestic law.
Simple on the surface. Significant in practice. This article unpacks what that sentence actually means — for international brands, regional businesses, Tanzanian companies, and anyone doing trade mark work in East Africa.
WHAT IS ARIPO AND HOW DOES THE BANJUL PROTOCOL WORK?
The African Regional Intellectual Property Organization (ARIPO) is an intergovernmental body established in 1976 under the Lusaka Agreement, headquartered in Harare, Zimbabwe. Tanzania is a founding member.
The Banjul Protocol on Marks (1993) is ARIPO’s regional trade mark system. It works like this: an applicant files one regional application with the ARIPO Office, designating the member states where protection is wanted. Each national office can raise a refusal within a set period. If no refusal is raised, the mark takes effect in that country.
Tanzania acceded to the Banjul Protocol. Designating Tanzania in an ARIPO application should, in theory, give you protection here.
In practice, it was not that simple.
THE PROBLEM BEFORE 2026
Before the 2026 amendment, there was a gap between what the Banjul Protocol promised and what Tanzanian domestic law actually provided.
The Trade and Service Marks Act (Cap. 326) — Tanzania’s domestic trade mark statute — was completely silent on ARIPO registrations. Courts asked to enforce an ARIPO-designated mark had to be persuaded, through treaty law arguments, that the mark had domestic legal effect. That argument was legally sound but practically burdensome, expensive, and uncertain.
The result? Most serious international brands maintained parallel domestic registrations at TIPO just to be safe. For smaller regional businesses — the very enterprises the Banjul Protocol was meant to serve — the cost of dual registration was a real barrier.
ARIPO marks designating Tanzania existed in a legal grey zone: technically effective under treaty law, practically unenforceable in Tanzanian courts without a parallel domestic registration.
WHAT THE 2026 AMENDMENT DOES
The Written Laws (Miscellaneous Amendments) Act, 2026 closes that gap. It amends Cap. 326 to provide that an ARIPO Banjul Protocol registration designating Tanzania is deemed to be registered under the Trade and Service Marks Act.
The mechanism is a statutory fiction — the law treats the ARIPO registration as if it were a domestic registration. No fresh filing required. No parallel application. The protection flows automatically from the ARIPO registration itself.
Here is what changes in practice:
Before the amendment The domestic legal effect of an ARIPO designation was uncertain. Rights-holders had to argue treaty law in court to establish standing. A search of the TIPO domestic register would not reveal ARIPO designations — creating hidden rights. Dual registration was the safe approach.
After the amendment An ARIPO registration designating Tanzania has the same legal status as a domestic registration under Cap. 326. Rights-holders can enforce directly as registered mark proprietors. ARIPO designations must now be treated as prior registrations when assessing conflicts with later domestic applications. Searchers must check ARIPO records in addition to the TIPO register.
WHAT THE AMENDMENT DOES NOT ANSWER
The deemed registration provision is powerful — but it leaves several important questions unanswered. Until TIPO publishes guidance or regulations, practitioners must navigate these carefully.
Renewal: Which system governs renewal — ARIPO or domestic? Letting an ARIPO registration lapse likely extinguishes the deemed domestic protection, but this is not yet confirmed.
Recordal of licences, assignments and security interests: Where do you record a licence or assignment affecting a deemed-registered ARIPO mark — against the ARIPO register, the TIPO domestic register, or both? The answer is unclear.
Scope of protection: The deemed registration presumably imports the ARIPO registration’s goods and services into the domestic registration — but the amendment does not expressly confirm this.
Priority date: Is the priority date the ARIPO filing date, the ARIPO registration date, or the date the 2026 amendment took effect? This matters for conflicts with domestic applications that were pending when the amendment came into force.
Until these questions are answered, the safest approach is to maintain your ARIPO registration in good standing, consider whether a confirmatory domestic registration provides additional certainty, and record transactions against both registers.
WHAT THIS MEANS FOR DIFFERENT STAKEHOLDERS
International brands Your ARIPO designations covering Tanzania now have confirmed domestic legal status. Enforcement actions that were previously unattractive due to legal uncertainty should be reconsidered. Review your ARIPO portfolio, confirm registrations are current, and assess whether any pending infringement situations now warrant action.
Regional African businesses The Banjul Protocol just became more commercially reliable for the Tanzanian market. You no longer need a separate domestic filing to confirm protection here. This reduces the cost of multi-country brand protection for East and Southern African businesses.
Tanzanian domestic businesses This is the most urgent change for you. A clearance search of the TIPO domestic register is no longer sufficient. You must now also search the ARIPO Banjul Protocol database before adopting a new brand — or you risk infringing a mark that now has full domestic legal status even though it never went through TIPO.
Trade mark practitioners Update your clearance search protocols immediately. Opinion letters advising on availability of marks in Tanzania must address both the TIPO register and the ARIPO Banjul Protocol register. Enforcement mandates for ARIPO mark holders are now structurally stronger. Transaction documents should address recordal obligations in both systems.
HOW THIS INTERACTS WITH THE OTHER 2026 REFORMS
The deemed registration provision does not sit alone. It compounds with the other IP reforms in the same Act.
Tanzania now permits registration of three-dimensional marks, colour marks, and holograms — mark types that were previously excluded. An ARIPO application covering these non-conventional mark types, once designating Tanzania, will now be treated as a domestic registration for those mark types under the modernised Cap. 326. For international brands with non-conventional marks, this creates a straightforward path to domestic protection that did not exist before.
The new express protection for well-known marks under section 19A adds another layer. A brand that holds an ARIPO designation covering Tanzania and qualifies as well-known in the Tanzanian market now has both deemed registration status and well-known mark protection — cumulative, reinforcing protection.
And under the Secured Transactions (Movable Property) Bill, 2026, a deemed-registered ARIPO trade mark is intangible movable property that can be pledged as collateral for a loan under Tanzania’s new secured lending framework. Regional businesses with ARIPO portfolios can now use those marks as financial assets — not just legal shields.
YOUR ACTION CHECKLIST
If you hold ARIPO Banjul Protocol registrations designating Tanzania:
- Audit your portfolio and confirm all registrations are in good standing
- Review whether parallel domestic registrations are still necessary
- Reassess any pending enforcement situations in Tanzania
- Search the TIPO register for conflicting later domestic marks
- Ensure licences, assignments and security interests are recorded in both systems
- Get specific legal advice on the unanswered questions — renewal, scope, priority date
If you are a Tanzanian business conducting trade mark clearances:
- Update your search protocol to include the ARIPO Banjul Protocol database
- Commission supplementary ARIPO searches on recently adopted brands
- Include ARIPO searches in acquisition due diligence
- Do not dismiss cease-and-desist letters from ARIPO mark holders on the basis that the mark is not on the TIPO register
CONCLUSION
The deemed registration provision for ARIPO Banjul Protocol marks is a small textual change with a large practical footprint. It closes a gap that has frustrated practitioners and rights-holders for years. It makes the Banjul Protocol genuinely reliable for the Tanzanian market. And it requires every practitioner, business, and court dealing with Tanzanian trade mark law to expand their frame of reference from the TIPO domestic register to the ARIPO Banjul Protocol register as well.
For rights-holders, this is an opportunity. For practitioners, it is an obligation. For businesses entering Tanzania, it is a reason to use the regional IP system with confidence.
Our team at RIVE & Co. advises on ARIPO portfolio management, trade mark enforcement strategy, and IP collateral arrangements under the new framework. If you have questions about how these changes affect your business, we would be glad to help.
Download here our pdf version https://www.rive.co.tz/wp-content/uploads/2026/03/RIVE-Article-ARIPO-Tanzania-2026.pdf
Download here the BILL here https://www.rive.co.tz/wp-content/uploads/2026/03/The-Written-Laws-Miscellaneous-Amendments-Act-2026-2.pdf
DISCLAIMER
This article is produced by RIVE & Co. for general informational and educational purposes only. It does not constitute legal advice and should not be relied upon as such. The analysis reflects the text of the legislation as published and does not account for subsequent amendments, implementing regulations, or judicial interpretation. Readers should seek specific legal advice before taking any action in reliance on this article.
CONTACT Sunday Ndamugoba — Partner, RIVE & Co. sunday@rive.co.tz | www.rive.co.tz