[Patent Attorney Supervised] IP Strategies for Hannover Messe | Protecting Technology at International Trade Shows

Hannover Messe, one of the world’s largest industrial technology trade fairs held in Germany, offers an excellent opportunity to break into European and global markets. However, if you neglect to protect your intellectual property (IP), you risk inadvertently revealing your company’s core technologies to the world for free.In this article, from a patent attorney’s perspective, we provide a thorough explanation of the IP risks specific to international trade shows—as well as patent and counterfeit protection measures—that you must understand before exhibiting or visiting.

1. What Is Hannover Messe?

Overview of One of the World’s Largest B2B Industrial Trade Fairs

Hannover Messe, held in the city of Hannover in north-central Germany, is the world’s largest industrial technology trade fair, taking place every spring. Since its inaugural event in 1947, it has led the latest trends in global manufacturing.

It has also garnered global attention as the birthplace of “Industry 4.0,” a concept championed by the German government. Today, it remains a major event where cutting-edge technologies and products related to IoT (Internet of Things), AI (Artificial Intelligence), robotics, automation technology, clean energy such as hydrogen and fuel cells, and sustainability all come together under one roof.

The Significance and Behind-the-Scenes of Japanese Companies Exhibiting at Hannover Messe

For Japanese manufacturers and companies possessing advanced core technologies, exhibiting at Hannover Messe serves as a gateway to the European market. The business benefits—such as joint development and partnership building with leading local companies, as well as entry into global supply chains—are immeasurable.

2. The “Three Fatal Intellectual Property Risks” Lurking Behind Exhibiting at Hannover Messe

Behind the glitz and glamour of the trade show lie the following three serious IP risks that could prove fatal to exhibiting companies.

Risk 1: Loss of Novelty (Inability to Obtain Patents or Design Rights)

A fundamental prerequisite for obtaining a patent or design right is that the technology or design possesses “novelty” (i.e., it is not yet known to the public). The moment you exhibit a new product at a Hannover Messe booth, distribute a catalog, or conduct a live demonstration, that technology becomes “public knowledge” (known to the public), and as a general rule, any subsequent patent application will be rejected during examination.

Risk 2: Imitation or Idea Theft by Other Companies

Among the attendees are not only genuine buyers but also engineers from competing companies and malicious operators intent on manufacturing counterfeit products. If you provide overly detailed explanations at your booth or display products in a way that reveals their internal structure—such as through a “skeleton” display—your ideas will be stolen in the blink of an eye.

Risk 3: Infringement of Third-Party Patents

There is also a risk that openly displaying your company’s products could unintentionally infringe on patent or design rights held by local companies. If you infringe on another company’s patents valid in Germany or throughout Europe, you may be served with a cease-and-desist letter during the exhibition.Furthermore, Germany is a country with strict intellectual property protection laws, and there is a risk of an injunction at the trade show where exhibits could be seized by local courts or customs under a preliminary injunction, forcing the removal of your booth right in front of visitors.

3. [Extremely Important] The Pitfalls of “Exceptions to Lack of Novelty” at the European Patent Office (EPO)

As a patent attorney specializing in international intellectual property, the point I want to emphasize most strongly is the strictness of the European patent system.

The Japanese common practice of “exhibiting first, then filing” does not apply in Europe

In Japan, there is a “grace period” (exception to loss of novelty) that allows for relief even if an invention becomes publicly known through one’s own exhibition activities, provided that the application is filed within one year of the disclosure. Consequently, many Japanese companies adopt the mindset of “Let’s exhibit at the trade show first to gauge customer reactions, and then decide whether to file a patent application.”

Hannover Messe is not an “officially recognized international exhibition”

The provisions for loss of novelty under the European Patent Convention (EPC) are extremely strict and limited compared to those in Japan or the United States. In Europe, exceptional relief is granted only in one of the following cases (for a period of six months):

4. Four Intellectual Property Measures Companies Should Take Before Exhibiting at Hannover Messe

To avoid such fatal risks and ensure a successful exhibition at Hannover Messe, companies must thoroughly implement the following four IP measures prior to exhibiting.

Measure 1: Thoroughly File Patent, Design, and Trademark Applications Before the Exhibition (Utilizing PCT Applications and the Madrid Protocol)

The best defense is to “ensure that a basic application is filed with the Japan Patent Office before the first day of the exhibition.” By filing with the Japan Patent Office prior to the exhibition and claiming priority under the Paris Convention to file foreign applications in Europe or elsewhere within one year of the filing date (six months for designs and trademarks), the disclosure at Hannover Messe will not result in a loss of novelty.

Measure 2: Conducting FTO (Freedom-to-Operate) Searches

It is essential not only to protect your own technology (offense) but also to take measures to ensure you do not infringe on the rights of others (defense).If you are planning to expand your business into the European market, we strongly recommend conducting an “FTO Search (Freedom to Operate: Infringement Prevention Search, Clearance Search)” prior to exhibiting to confirm that your products do not infringe on local patents or designs. This will help prevent the worst-case scenarios, such as unexpected cease-and-desist letters or the removal of your booth at the exhibition venue.

Measure 3: Keeping Trade Secrets (Know-How) Under Wraps and Preparing NDAs

Even if you file a patent application, you are not required to disclose all technical information without reservation. For technologies that cannot be analyzed solely from an external perspective—such as manufacturing processes or proprietary material formulations—it may be advantageous to treat them as “trade secrets” and keep them under wraps.

Strategy 4: Utilizing German Utility Models and Unitary Patents (UP)

Even if you inadvertently exhibit new technology at Hannover Messe before filing a patent application, do not give up immediately; consult a patent attorney. While obtaining a European patent may seem hopeless, the German utility model (Gebrauchsmuster) system allows for a “six-month grace period” (an exception to loss of novelty) from the date of public disclosure caused by the applicant’s own actions. It is possible to adopt this second-best strategy to protect your company’s technology as a utility model right within Germany.

Furthermore, if you are planning to expand into Europe, it is essential to adopt a strategy that leverages the “Unitary Patent (UP)” system, which launched in 2023, to build a strong patent network across a broad region of Europe while keeping costs down.

5. Intellectual Property Strategies Specific to the Industry 4.0 and IoT Era (Software and AI)

In cutting-edge technology fields related to “Industry 4.0” and smart factories—key themes of the Hannover Messe—advanced intellectual property strategies distinct from those for traditional machinery and hardware are required.

AI algorithms that analyze manufacturing data to optimize production efficiency, and software that controls IoT devices, are the sources of competitiveness in modern manufacturing.While the European Patent Office (EPO) does not consider mere programs themselves to be patentable, software and AI inventions (computer-implemented inventions) that “solve technical problems” are recognized as patentable. Patent attorneys are required to employ advanced specification drafting techniques tailored to the EPO’s unique and stringent examination criteria (presence of technical features).

For intellectual property strategies in the IT and software sectors, please also visit our "One-Stop Guide to All IT IP" page.

6. Why Should You Entrust Your Overseas Trade Show IP Strategy to a "Patent Attorney"?

In such complex overseas IP practices, utilizing a patent attorney provides a powerful business advantage for companies.

Summary: Eliminate IP Risks and Secure Success at Hannover Messe

Exhibiting at Hannover Messe is an excellent first step toward showcasing your company’s superior technology to the world and achieving dramatic growth. However, hidden risks lurk there—including imitation, infringement, and the invisible yet fatal risk of “never being able to obtain a patent again.”

Please devote as much attention to your “IP strategy”—designed to protect your company’s intellectual property—as you do to developing your technology and preparing an attractive exhibition booth. Ensuring you “file patent applications before the exhibition (to secure novelty),” “prevent infringement of third-party patents (FTO search),” and “utilize the latest European patent system” is the key to minimizing risks and maximizing business opportunities in your overseas expansion.

*This article is intended to provide general information and is based on the European Patent Convention (EPC), official information from the European Patent Office (EPO), materials from the German Patent and Trademark Office (DPMA), and various documents from JETRO and INPIT. For specific decisions regarding individual cases, we recommend consulting with experts, including local agents.