How to File a Patent in Germany with the DPMA: A Practical Guide for Foreign Businesses

Filing a patent in Germany follows a recognisable shape: you prepare an application, the office examines it, and a patent grants if it clears. What catches out foreign businesses is the German context rather than the mechanics. Germany runs its national patent system through the DPMA (the Deutsches Patent- und Markenamt, the German Patent and Trade Mark Office), it expects German-language filings, it generally requires a foreign applicant to act through a local representative, and, distinctively, it splits the request for substantive examination out as a separate step rather than treating it as automatic on filing. This guide walks through the national route at the DPMA and then sets it against the European alternatives, because the most important decision a foreign business makes here is which office to file at, not just how to file. It is general information, not legal advice.

The specification, the claims and the drawings

A German patent application generally consists of a request to grant, a description of the invention that is full enough to enable a skilled person to carry it out, one or more claims that define the protection you are seeking, an abstract, and any drawings needed to understand the invention. The claims do the legal work. They mark the boundary of what you can later enforce, so their drafting is where most of the value and most of the risk sits. A description that discloses a clever invention but claims it narrowly leaves the substance unprotected, while claims that overreach invite objections during examination or vulnerability later. This is craft work, and it is the main reason foreign applicants engage a qualified German patent attorney rather than filing raw.

Germany applies a strict approach to novelty. Any public disclosure before your filing date (or priority date, if you claim priority), whether you publish a paper, pitch to a manufacturer, exhibit at a trade fair or start selling, can destroy patentability. The defensive habit is simple: file before you disclose. If your invention is a technical one (a device or product rather than a process or method) and you want faster, enforceable cover while the patent works through examination, Germany offers a registered, unexamined utility-style right; we cover that separately in our guide to the Gebrauchsmuster (the German utility model). Note its limits: it is granted without substantive examination, it generally cannot cover processes or methods, and it is not a design right protecting the appearance of a product, so it does not match the scope of a full patent.

German-language filing and translation quality

The DPMA conducts proceedings in German, and the application documents are generally expected in German. It is often possible to file in another language first and supply a German translation within a set period, but you should not rely on that as a default; confirm the current rule and the applicable deadline with the DPMA or a local representative before planning around it. Where translation is needed, treat its quality as a substantive issue, not an administrative one. A patent specification is a legal instrument, and a translation that subtly shifts the meaning of a claim term can narrow your protection or introduce ambiguity an examiner or an opponent will exploit. Use a translator experienced in patent work and have the German claims reviewed by your German attorney rather than accepting a generalist rendering.

The local-representative requirement for foreign applicants

If you have neither a residence nor a place of business in Germany, the German Patent Act requires you to appoint a representative in Germany (a Patentanwalt, a German patent attorney, or a Rechtsanwalt, an attorney-at-law) to act for you before the DPMA and to receive correspondence. This is a statutory requirement, not merely a practical convenience, so build representation into your timeline and budget from the outset. The same professional who handles your representation will usually draft or review the claims and manage the examination dialogue, so choosing well matters for the whole life of the application.

The separate request for examination

Here is the feature that most surprises applicants used to systems where examination follows automatically. Filing a German patent application does not by itself trigger substantive examination of novelty and inventive step. You generally have to file a separate request for examination, and that request must be made within a statutory period running from the filing date. If the period lapses without a valid request, the application is deemed withdrawn. The exact length of that window is version-specific, so do not treat any single figure as fixed; confirm the current period and fee with the DPMA or local counsel and diarise it carefully. The deferral can be useful, because it lets you delay the larger examination cost while you assess the invention's commercial promise, but the flip side is that an undiarised deadline is a classic way to lose an otherwise good application.

Publication, examination and office actions

German applications are generally published once a set period has elapsed after filing, which publishes the technical disclosure and starts certain provisional rights running. Once you have requested examination, an examiner assesses the application against the prior art for novelty, inventive step and the other patentability requirements, and typically issues one or more official communications, often called office actions, raising objections or asking for clarification. You respond by arguing, amending the claims, or both, within the deadlines the office sets. These rounds are where the scope of your eventual patent is negotiated, and missing a response deadline can cost you the application, so this is the stage at which experienced local representation earns its keep.

Grant, and keeping the patent in force

If the application clears examination, the DPMA grants the patent and publishes the grant. Grant is not the end of the cost, though, and renewal (annuity) fees are not tied to grant. They generally begin accruing from an early year measured from the filing date and are payable even while the application is still pending, continuing for the life of the patent; missing one can cause the patent or application to lapse, after which the protection is gone. The exact schedule, amounts and any grace periods are version-specific; official fees apply, confirm the current amount with the DPMA (or the EPO as relevant) or local counsel. Diarise renewals well ahead of each due date rather than relying on a single reminder. For how the national right sits alongside the regional options, see our overview of the national versus European patent routes.

The European and international routes

The national DPMA filing is only one way to reach protection in Germany, and for many foreign businesses it is not the obvious one. Two regional and international layers sit alongside it, and conflating them is a common and expensive error.

The first is the European patent granted by the European Patent Office (EPO) under the European Patent Convention. The EPO is not an EU institution and is separate from the DPMA; it examines and grants a European patent centrally, which the holder then brings into effect (validates) in the individual member states they want, including Germany. On top of that, the Unitary Patent allows a single European patent to take unitary effect across the participating EU member states in one step, with central renewal and central litigation through the Unified Patent Court, rather than a bundle of national rights. The territory covered is fixed at the date the unitary effect is registered and extends only to those EU member states then participating, not to all EPC states and not to all EU states. The Unified Patent Court also has jurisdiction over classic European patents that have not been opted out of its competence, not only Unitary Patents. Whether the national DPMA route or the European route serves you better depends on how many countries you are targeting: a single German market often points to a national filing, while a multi-country European footprint often points to the EPO. We compare the trade-offs in detail in the national versus European patent guide, and the broader landscape sits under the German patents pillar.

The second layer is the Patent Cooperation Treaty. A single international application under the PCT secures an international filing date (and the benefit of any priority claim) recognised across the member states, and buys time, through an international phase, before you commit to and pay for protection in specific regions. You then enter the national or regional phase, and for Germany that typically means entering either the German national phase before the DPMA or the European phase before the EPO. The national or regional-phase deadlines under the PCT are strict and forfeiting them is permanent, so confirm the applicable deadline before relying on it. For the wider mechanics, see our overview of the PCT route. Whichever route you choose, where your home country is a Paris Convention or WTO member you can claim priority from an earlier foreign application if you file within the priority period, which lets a first filing in your home country set the effective date for the German or European filing that follows; the length of that period is set by the rules, so confirm it rather than assuming.

A note before you file

IPEnvoy is not a law firm and does not provide legal advice; this is general information. The German system rewards early filing, careful claim drafting, attentive deadline management and a deliberate choice between the national, European and international routes, and the consequences of getting any of those wrong are often permanent. Before you file, confirm the current position with the DPMA's official website and a qualified German IP professional, who can pressure-test your route choice, your disclosure timing and the German wording of your claims against the facts of your invention.