The firm of VON ROHR Patent Attorneys is located in the City of Essen. Having more than 570,000 inhabitants, the City of Essen is one of the biggest cities in the Federal State of North-Rhine Westphalia and in Germany. Furthermore, the City of Essen exhibits also a very high economic significance since eleven of Germany's 100 largest companies have their headquarters in Essen, including even some companies listed in the German share index DAX. The City of Essen also hosts important trade and industry fairs.

Essen's location at the heart of one of Europe's largest economic areas, i.e. the Ruhr area, does not only provide an excellent infrastructure but is also a crucial aspect to competitiveness. Approximately 40 % of the inhabitants of the European Community live within a radius of 500 kilometers and generate approximately 60 % of the total income earned in the European Community. Six million people live within a radius of fifty kilometers. As a business location, Essen is of more than regional importance to the Ruhr area and the adjoining regions of Sauerland and Siegerland.

The City of Essen is located close to the City of Dusseldorf, the State Capital of North-Rhine Westphalia with its international airport. Not only due to its central geographic position and due to its numerous train and motorway connections, the City of Essen is ideally situated for national and international travel and is in immediate proximity to the Patent Courts of Dusseldorf, which execute a majority of European patent litigations.

The City of Essen offers a large variety of cultural events: it is home to the Aalto Theater, an opera house famous for its spectacular opera productions, as well as to the historic Grillo Theater, Folkwang Museum, Zollverein Coal Mine, Villa Hügel (former home of the Krupp family), the Saalbau Philharmonic Hall, which stages concerts of the Essen Philharmonic Orchestra and renowned guests, and Gruga Hall, Essen's largest event location and, at the same time, home of the Essen Fair. In 2010, the City of Essen was the European Capital of Culture.