Utility Models in Germany

Utility models in Germany: fast protection without examination

Utility models (Gebrauchsmuster) are Germany's second technical property right alongside patents. They protect inventions that are new, involve an inventive step and are industrially applicable (§ 1(1) of the Utility Models Act, Gebrauchsmustergesetz, GebrMG), but the German Patent and Trade Mark Office (DPMA) registers them without examining these requirements (§ 8(1) GebrMG). Registration typically follows within weeks of filing, and the right can be enforced immediately. Protection lasts up to ten years from filing (§ 23(1)).

For companies that need enforceable protection quickly — for example because a competitor is already copying a product at a trade fair — utility models are one of the most practical tools in German IP law.

The trade-off is legal certainty. Because nothing has been examined, a registered utility model may later prove invalid, and the owner bears the risk when enforcing it. Used well, however, they complement patents: they bridge the period while a patent application is pending, provide a second line of attack in litigation and cover products with short market cycles.

What utility models can and cannot protect

The protectability requirements largely mirror patent law, with some important differences:

• No processes: methods and processes cannot be protected by utility models (§ 2 no. 3 GebrMG). Products, devices, apparatus, circuits, chemical substances and compositions can be.
• No biotechnological inventions and no plant or animal varieties (§ 1(2) no. 5, § 2 no. 2).
• Software as such is excluded, as in patent law; technical devices controlled by software can be protected if the claims focus on the device.
• Novelty: prior art comprises written descriptions available worldwide but, for prior use, only use within Germany (§ 3(1) GebrMG) — narrower than patent law.
• Grace period: a description or use by the applicant within six months before the filing or priority date does not destroy novelty (§ 3(1) sentence 3). This is a significant advantage over patents, where Germany and the EPO have no general grace period.

Branching off from a patent application

One of the most useful features is the branch-off (Abzweigung). An applicant who has filed a patent application with effect for Germany — a German, European or international application — can file a utility model application for the same invention and claim the patent application's filing date and priority (§ 5(1) GebrMG). The branch-off is possible until two months after the end of the month in which the patent application is disposed of or any opposition proceedings are concluded, and at the latest until the end of the tenth year after the patent application's filing date.

This creates strategic options:

1. Quick enforcement: while a patent application is still being examined, a branched-off utility model can be registered and enforced against an infringer within weeks.
2. Tailored claims: the utility model claims can be drafted to fit the infringing product, within the original disclosure of the patent application.
3. Fallback after refusal or revocation: where a patent application is refused or a patent is revoked, a branch-off within the deadline can preserve protection, provided the subject matter is protectable as a utility model.

Searching and assessing validity before enforcement

Because these rights are not examined, owners should assess validity before enforcing. The DPMA offers a search on request (§ 7 GebrMG), which identifies relevant prior art. Many owners commission their own searches and opinions, especially before sending warning letters. Enforcing an invalid utility model can lead to liability for unjustified warning letters and for damage caused by enforcement of preliminary injunctions or provisionally enforceable judgments.

Warning letters and the risk of unjustified enforcement

A warning letter (Abmahnung) based on an unexamined right deserves particular care. German case law treats an unjustified warning letter based on an industrial property right as a potential interference with the recipient's business, which can give rise to injunction and damages claims, especially where the letter is sent to the competitor's customers. Owners should therefore address the letter to the alleged infringer itself in the first instance, describe the right and the infringement precisely, and avoid overstating the strength of the registration.

Recipients, for their part, should not simply comply: they should analyse the registration against the prior art, consider a cancellation request and, where appropriate, file a protective letter with the central register to prevent an ex parte injunction.

Cancellation proceedings and invalidity defences

Anyone can apply to the DPMA for cancellation (Löschung) of a utility model on the grounds that it is not protectable under §§ 1–3, that the subject matter was already protected by an earlier patent or utility model application, or that it extends beyond the original application (§ 15(1) GebrMG). Cancellation can be partial, including by amending the claims (§ 15(3)). Decisions of the DPMA's utility model division can be appealed to the Federal Patent Court, and from there, with leave, to the Federal Court of Justice. A cancellation request is often the defendant's first step after receiving a warning letter, because it puts validity before a specialised body at moderate cost.

Unlike patents, a Gebrauchsmuster is not subject to full bifurcation. In infringement proceedings, the defendant can argue that the utility model is not protectable, and the infringement court examines this itself. If cancellation proceedings are pending, the court may stay the infringement case and must do so if it considers the registration ineffective (§ 19 GebrMG). If a cancellation request was rejected, the court is bound only where the decision was between the same parties. For the patent side of this comparison, see our insight on the injunction gap and bifurcation.

Enforcing utility models

The remedies mirror patent law: injunctions, damages, information and accounting, recall and destruction (§§ 24 ff. GebrMG). Infringement actions go to the regional courts with patent chambers. Preliminary injunctions are available in urgent cases, but German courts are cautious where validity has not been examined; applicants usually need to show that the utility model is very likely valid, for instance through a search report and a convincing analysis of the closest prior art.

These are national rights; they are not covered by the Unified Patent Court. A combined strategy — a European patent or unitary patent at the UPC and a German utility model before national courts — can give owners two independent routes. See our pages on patent litigation and the Unified Patent Court.

Utility models for trade fairs and product launches

Trade fairs are a classic setting. A company that discovers a copy at a fair can, if it holds a pending patent application, branch off a utility model, obtain registration quickly and apply for a preliminary injunction. Competitors exhibiting products should therefore check not only granted patents but also pending applications and registered utility models of their rivals, and consider protective letters.

Choosing between utility models and patents

The choice is rarely either-or. A practical rule of thumb is to file a patent application for important inventions and to use a branch-off whenever quick enforcement is needed or a fallback is valuable. A stand-alone Gebrauchsmuster without any patent application makes sense for incremental product improvements with short market cycles, for SMEs that mainly sell in Germany, and where the six-month grace period can rescue an invention that was disclosed before filing.

Patents remain preferable where processes must be protected, where protection is needed beyond ten years, where the invention is in biotechnology, or where coverage across many countries is required. Owners should also consider litigation dynamics: an examined patent carries more weight in settlement negotiations and in applications for preliminary injunctions than an unexamined registration.

Common mistakes

• Relying on a registration without checking validity, then facing a cancellation request and a claim for wrongful enforcement.
• Missing the branch-off deadline after a patent application is refused or withdrawn.
• Claiming a process, which cannot be protected, instead of the device or product.
• Overlooking that prior use abroad is not novelty-destroying for these rights, while written publications anywhere are.
• Failing to align claims with the infringing product, which is the main advantage of a late branch-off.

Illustration

Illustration: a hypothetical Mittelstand manufacturer filed a European patent application for a new pump housing two years ago; examination is pending. At a trade fair in Germany, it finds a competitor offering a near-identical housing. Within days, it files a branched-off Gebrauchsmuster claiming the European application's filing date, with claims tailored to the competitor's product, obtains registration within weeks and, after an internal validity check, applies for a preliminary injunction for Germany. The European application continues in parallel and, once granted, can be enforced at the UPC for other countries.

Costs and maintenance

Filing and maintenance fees are low compared with patents. Protection is maintained by paying renewal fees for the fourth to sixth, seventh and eighth, and ninth and tenth years (§ 23(2) GebrMG); if fees are not paid in time, the right lapses. Owners should review their registrations at each renewal point and drop those no longer needed.

Utility models in contracts and transactions

These rights can be licensed, assigned and pledged like patents. In due diligence, buyers should check registration status, maintenance fees, branch-off dates and any cancellation actions. Because validity has not been examined, warranties should address known prior art and pending challenges. Employee-invention rules apply equally here; see our insight on employee inventions and on patent prosecution at the DPMA and EPO.

How TRW & Co helps with utility models

We advise companies on using utility models in Germany as part of their IP strategy: identifying when a branch-off is useful, coordinating filings with patent attorneys, assessing validity before enforcement, and enforcing utility models through warning letters, preliminary injunctions and infringement actions. For defendants, we prepare cancellation requests at the DPMA and invalidity defences in court, and assess liability for unjustified enforcement. We also review portfolios of registered rights in licensing and M&A. To discuss a utility model or a copied product, contact us.