Trademark portfolio management is largely jurisdiction-neutral until it suddenly is not. Most portfolio guides tell you what to do; fewer tell you what is different in a particular jurisdiction — and that difference is usually where portfolios quietly lose value.

This guide sets out the practical steps for in-house counsel responsible for a Turkish trademark portfolio, and for foreign associates instructing local counsel on their clients' behalf. Along the way it flags the points that most often surprise practitioners coming from other systems.

Where Turkey differs

If you manage Turkish trademarks from abroad, six points account for most of the surprises:

• Reputation must be proved again in every single file — a famous mark with a thin evidence record loses.

• Proof of use is requested routinely in oppositions, and invoices are the strongest evidence — which makes invoice design an IP issue as much as an accounting one.

• The Bulletin publishes every two weeks; the opposition window is two months.

• The Turkish Patent and Trademark Office (TPTO) refuses identical earlier marks ex officio, not only on opposition.

• Madrid designations need a power of attorney to answer a refusal, and broad class 35 wording routinely draws a clarification requirement.

• Official fees rise substantially every year, so renewal timing has a budget dimension.

The sections below set out the working method behind each of these.

Build your own portfolio list — do not rely on the register alone

Start by establishing what the company actually owns. Most companies have some form of internal file, but it is rarely complete. Where it is not, the marks can be reconstructed through the TPTO's online search.

It pays to go beyond the tables the Office produces. A clean, externally maintained list should cover, for each mark: the specimen, application and registration numbers, current procedural status, classes, renewal dates, and whether the mark is actually in use. New filings are added as they are made.

Two benefits follow. The list makes day-to-day management far easier — and it can be filed as a supporting exhibit in oppositions and court proceedings, where a coherent overview of the owner's rights carries real weight.

A parallel version with a comments column is worth maintaining for internal notes and observations that should not travel outside the company.

Renewals: track them yourself, and renew early

Renewal is procedurally trivial and strategically dangerous. A company with dozens or hundreds of marks can lose one to a simple diary failure.

Watch software is a reasonable option for large portfolios. For renewals specifically, though, a well-built Excel sheet is more useful: with formulas covering the ten-year term, it can show the renewal window opening, the protection expiry date, and the days remaining, updated daily. Critical dates should also be pushed into the calendar as invitations.

The dates that matter are the six months before expiry, during which renewal is made in the ordinary way, and the six months after expiry, during which renewal is still possible against an additional fee. Do not plan around the second window: it exists as a remedy, not as a schedule, and the intervening period carries legal uncertainty that is not worth taking on.

One further point for foreign owners used to stable fee schedules: the TPTO's official fees are increased substantially every year. Renewing as soon as the window opens is therefore both a cash saving and one less thing to think about.

Check the marks actually in use against the marks registered

If the company is using logos or wordings that differ from what is on the register, new filings may be needed.

The safest approach is to register every variant in use. Where the difference is limited — a change of colour, or the addition of descriptive wording that does not alter the distinctive character — the existing registration can reasonably be regarded as covering the use. Beyond that, file.

In practice, the hard part is not the legal test but the information gathering. In a company with a large portfolio, counsel cannot realistically know every mark in market use. Sales and marketing need to be brought in: circulate the portfolio list and ask them to mark it up.

Check the classes against the business

Registered classes drift out of alignment with commercial reality faster than most companies expect.

Where the business is narrow, the analysis is straightforward. A food producer selling only through retailers may be adequately covered in classes 29–33. Add a direct e-commerce channel, and class 35 retail services becomes necessary. A software developer covered in class 9 for its own products will need class 42 the moment it starts providing software services to third parties.

For diversified groups operating multiple brands across sectors, counsel needs a clear picture of which mark serves which purpose — again, with input from other departments.

Finally, look forward. If the company is planning to expand into new activities, check now whether the existing registrations reach them. Where they do not, list the gaps and evaluate new filings.

New filings: overcoming earlier rights

Before filing for an unprotected mark, search the TPTO's database for earlier third-party marks that could block the application.

A blocking mark does not necessarily mean abandoning the filing. Consider instead adding elements that increase distinctiveness:

• File the sub-brand together with the house mark, or the reverse.

• Draft the specification yourself rather than accepting the TPTO's standard class headings, limiting it to the goods and services actually intended.

Both meaningfully improve the prospects of registration.[1]

If additions are not commercially acceptable, the alternatives are acquisition of the earlier registration or a letter of consent from its owner — though in practice the owner will usually want to be paid, which makes these less attractive. Invalidation before the courts is available where the grounds exist, but it is slow.

Where the cited mark is more than five years old, there is a better route. The TPTO refuses applications ex officio under Art. 5/1(ç) of the IP Code where an identical or indistinguishably similar earlier mark covers the same goods or services. If that cited mark has been registered for more than five years and there is no sign of use, the answer is not to abandon the application but to attack the citation:

• File a non-use revocation request against the cited mark before the TPTO. In current practice this takes roughly a year to conclude.

• In parallel, appeal the refusal, stating that a revocation request has been filed against the cited mark and asking the Office to decide the revocation first, then allow the application once the citation is removed from the register.

Because both proceedings generally progress over a similar period, the appeal can remain pending until the revocation request has been determined. If the cited registration is revoked, the legal basis for the ex officio refusal disappears with it. Handled this way, a refusal that would otherwise end the filing becomes a manageable delay.

Madrid designations: what to plan for

Much of a foreign owner's Turkish portfolio will arrive through Madrid rather than national filings. Three points are worth planning for in advance.

Representation and powers of attorney. A holder without a residence or establishment in Turkey must act before the TPTO through a registered Turkish trademark attorney — this applies to national filings and Madrid designations alike. What differs is the paperwork: filing a national application or an opposition does not require a power of attorney, but responding to or appealing a provisional refusal on a designation does.

Where the clock starts. The response period runs from the date of WIPO's notification to the holder or its appointed representative, so transit time is not deducted from the window. What does consume the window is the appointment itself: where no Turkish agent is in place when the refusal issues, the search, the engagement and the power of attorney all come out of the response period rather than preceding it. Appointing local representation before it is needed is the simplest way to recover that time.

Class 35 wording. Broad retail services wording carried over from the basic registration regularly draws a clarification requirement in Turkey, which expects the goods to be retailed to be specified. This matters more than it sounds: the clarification can only be addressed through the appeal stage, which is slow and postpones registration of the whole designation. Reviewing and narrowing the class 35 specification before designating Turkey is considerably cheaper, and considerably faster, than correcting it afterwards.

Note also that designations are subject to the ex officio examination described in section 5, and that the non-use revocation strategy set out there is available against a cited mark here in the same way.

Build a well-known mark file — once, properly

A finding of reputation gives a mark protection it would not otherwise have, across oppositions, invalidation actions and infringement proceedings, and beyond the registered classes.

Here is the point foreign counsel most often miss: in Turkey, reputation must be proved again in every single file. Marks that any consumer in the country would recognise regularly fail to benefit from their reputation, simply because the evidence in that particular file did not establish it. It does not matter how famous the mark is; if the record does not prove it, the reputation provisions of the IP Code do not apply.

The solution is what we internally call the well-known mark file — a single, carefully assembled evidence bundle, prepared once and thoroughly, approaching reputation from several angles at the same time. It can then be filed as evidence in every opposition and every action concerning that mark.

Useful contents include: earlier registrations with explanatory commentary, internal brand presentations, financial statements, social media activity, press coverage, advertising and advertising spend, quality certifications, favourable TPTO decisions in earlier oppositions, earlier court judgments, and any relevant Competition Board decisions. Not all of these are required — but include everything you can obtain. Historic material is welcome; current material is essential.

Reputation is assessed by reference to the relevant consumer group. A mark unknown to the general public may still be well known within its own market.

Filing the bundle as an annex to every opposition and every pleading is a highly practical habit. It supports the reputation claim itself, and it strengthens adjacent arguments — likelihood of confusion and bad faith among them.

On the TPTO well-known mark registry: you may also apply to have the mark recorded. There is no statutory basis for this registry, and the Court of Cassation has held that the Office has no authority to maintain one — yet as of today it continues to do so. Where a recordal is obtainable, it serves as a useful supporting document and belongs in the file. But it does not relieve you of proving reputation: continue filing the full bundle in every case. Note also that applications currently take around three years to conclude.

Because reputation is not a fixed state — as the case law itself acknowledges — the file should be updated with new material at least once a year: fresh favourable decisions from the TPTO and the courts, and documents generated in proof-of-use exercises.

For the rest of the portfolio, where reputation is not asserted, prepare a broader brand profile file. It draws on the same categories of evidence, and should demonstrate the investment made in the mark, the activities conducted under it, and its distinctive character. Use it as an annex, or work it into the body of the pleading.

One caution. Proving reputation does not mean automatic protection across all classes. The other statutory conditions still apply. Under Art. 6/5 of the IP Code, an opposition succeeds only if you also show that registration of the opposed mark would take unfair advantage of, be detrimental to the repute of, or dilute the distinctive character of your mark. A likelihood is sufficient — but you must establish the causal link between your mark's reputation and that risk, and the strength of that link will rise or fall with the goods and services covered by the opposed application. The lawyer's standard formula applies here as everywhere: each case turns on its own facts.

Watching: the bulletin, the two-month window, the 60% threshold

Registering your own marks is only half the exercise. Third-party applications for identical or similar marks have to be stopped at the application stage. Once such a mark registers and its owner begins using it, you face both an infringement problem and an invalidation action — and because the judgment must become final, the timeline stretches considerably.

Practical mechanics in Turkey:

• New applications are published in the Official Trademark Bulletin every two weeks.
  The opposition period is two months from publication.

• Running a monthly watch report covering both bulletins published in that month gives you — or your local associate — comfortable time to meet the deadline.

Watch software will ask you to set a similarity threshold. In our experience 60% is the right setting. One exception is worth knowing: where an application consists of many words, the monitored element may represent too small a proportion of the whole to trigger the filter. To catch these, run a separate targeted search for the monitored mark across the relevant bulletin.

Finally, watch across all classes, not only the registered ones. Related classes matter, and for marks with reputation this is essential rather than optional.

Make sure your use is provable — and think about invoices now

Before opposing a third-party publication, make sure you can prove use of the marks you intend to rely on.

This is where foreign owners are most often caught out. Oppositions in Turkey are overwhelmingly based on Art. 6/1 (likelihood of confusion from similar signs and classes) — and under Art. 19/2, if your earlier marks have been registered for more than five years as at the filing date of the opposed application, the applicant may respond by requesting proof of use. You then have one month from the TPTO's notification to prove genuine use, over the five-year period preceding the filing date of the opposed application. Fail, and the opposition is rejected under Art. 6/1.

Use may be proved by any evidence: invoices, packaging, labels, price lists, catalogues, social media posts, website screenshots. What matters is that the specimen of the mark, the date, and the manner of use are all clearly identifiable.

The statute requires use to be genuine but does not define the term. In practice, invoices are treated as the strongest evidence. Two consequences follow, and they are worth acting on before any dispute arises:

• Make sure your marks appear in the goods and services descriptions on the company's invoices.

• For house marks in particular, have the registered logo printed on the invoices themselves.

There is no quantitative threshold for genuine use. What you need to show is the mark's commercial impact and the effort behind it. One effective method is to submit invoices from several different years within the five-year period — weighted toward the more recent years — supported by further dated materials evidencing use. On that basis, genuine use is very likely to be accepted.

These proof-of-use bundles feed directly into the well-known mark file and the brand profile file, and the explanations and evidence prepared for those files can be redeployed when a proof-of-use request arrives. Assembled once, the same material does three jobs.

Two strategic warnings:

• If your earlier marks are over five years old and you are not using them, think carefully before opposing. Failing to prove use reveals the non-use — and the applicant you attacked can then request revocation of your mark.

• Filing fresh applications to sidestep the proof-of-use requirement is not a clean solution either. Third parties can oppose those filings, arguing that you have been repeat-filing to avoid proof of use or revocation, and that the application was made in bad faith.[2]

Use may also need to be proved in litigation, not just before the Office: in invalidation and infringement actions founded on Art. 6/1, the defendant can raise the non-use defence.

Factor all of this into how you approach third parties.

Oppose early — it is far cheaper than litigation

Blocking similar applications protects the reputation of your mark and its ability to perform its commercial functions.

An opposition filed today will typically produce a decision from the TPTO's Trademarks Department within five to eight months. Achieving that with a single opposition brief — plus proof of use if requested — is dramatically more economical and more effective than years of litigation.

The applicant can, of course, appeal to the Re-examination and Re-evaluation Board, and challenge the final decision before the Ankara IP Civil Court. But once you have blocked registration at the opposition stage, the procedural posture of everything that follows favours you.

Beyond preventing consumer confusion and diverted sales, the real value is long-term: preserving the distinctive strength of the mark, and with it the advertising and quality functions that draw consumers to it in the first place. A company can be doing everything else right and still put its success at risk through a poorly managed trademark portfolio.

Opposition briefs will be quicker and more consistent if drawn from the portfolio list, the well-known mark file and the brand profile file. Treat a brief covering the full range of opposition grounds as your template, and adapt it to the facts of each case.

Maintain a decisions database. Keep favourable decisions from the TPTO, the Re-examination and Re-evaluation Board and the courts organised by mark and by legal ground. Earlier decisions are frequently persuasive in later proceedings, particularly where they concern the same mark or closely related facts. Placed before the courts, they reinforce the distinctive strength of the mark, its reputation, and your legal arguments. A searchable database substantially reduces drafting time and promotes consistency across oppositions and litigation.

The annual portfolio check, in short

If you do nothing else once a year, do these:

• Refresh the portfolio list — including Madrid designations in their own column.
  Confirm every renewal date for the coming eighteen months, and renew as soon as each window opens.

• Ask sales and marketing for the marks currently in market use, and compare against the register.

• Compare the registered classes against both the current business and next year's plan.

• Review class 35 wording on any designation still in prosecution, before a clarification requirement forces you into the appeal stage.

• Update the well-known mark file with the year's new decisions, press coverage and financials.

• Confirm the house mark still appears on invoices, in both the logo and the goods description.

• Review the watch settings: 60% threshold, all classes, plus a targeted search for multi-word applications.

• Add the year's favourable decisions to the decisions database.

• List the marks over five years old for which you could not currently prove use — and treat that list as a constraint on how you enforce.

Closing

The steps above are a foundation, not a complete programme. Portfolio management in Turkey also involves choosing highly distinctive marks at the filing stage; monitoring competitors' marks and their actual use in the market; tracking registered and unregistered third-party use; cease-and-desist correspondence; developing coherent strategies for mediation and litigation; ensuring customs recordals cover goods entering and leaving the country; and extending protection into export markets.

But the underlying point is this. A Turkish trademark portfolio should not be treated as a collection of registration certificates. Properly managed, it becomes an active enforcement tool — one that supports opposition strategy, litigation, licensing and long-term brand value.

The strongest trademark portfolios are rarely those containing the greatest number of registrations. They are the portfolios that are organised, documented and maintained so that every registration can be enforced when it matters.