Licence agreement for KORTLEN Mouse Studio
As of October 2026. This is a translation. The legally binding version is the German one: Lizenzvertrag.
§ 1 Subject
(1) KORTLEN, owner Saleh Habibian, Am Girrenbach 10, 87534 Oberstaufen, Germany (hereinafter "KORTLEN"), provides the software "KORTLEN Mouse Studio" (hereinafter the "App") free of charge. With the App, the user sets up KORTLEN mice and installs new firmware in the mouse.
(2) This agreement governs the use of the App, its updates and the firmware updates provided through the App.
§ 2 Right of use
(1) KORTLEN grants the user the simple, free-of-charge and unlimited right to install and use the App on devices that the user uses personally, in order to set up and use KORTLEN mice.
(2) The user may install firmware updates only in KORTLEN mice.
(3) All further rights in the App, in particular the copyright and the rights in the KORTLEN trademark, remain with KORTLEN.
§ 3 What is not allowed
The user is not allowed
- to sell, rent, lend or otherwise distribute the App or parts of it; the App is available to everyone free of charge on kortlen.com,
- to modify, translate, decompile or reverse-engineer the App, unless this is expressly permitted under §§ 69d and 69e of the German Copyright Act,
- to remove copyright notices, trademarks or licence notices from the App.
§ 4 Software of other providers
The App contains components of other providers, for example open-source software, icons and fonts. Their own licences apply to these components and take precedence over this agreement. The App lists them under Help → About → Show credits and licences.
§ 5 Internet connection and updates
(1) The App can ask KORTLEN over the internet whether new versions of the App and of the firmware are available, and it downloads new firmware when the user starts an update. Which data is transmitted is described in the privacy policy.
(2) KORTLEN may provide updates of the App and of the firmware. There is a right to updates only as far as the law provides for one.
§ 6 Warranty and liability
(1) KORTLEN provides the App free of charge. KORTLEN is therefore liable only for intent and gross negligence, and for defects of the App only if KORTLEN fraudulently concealed them.
(2) This does not affect liability for injury to life, body or health, liability under the Product Liability Act, or the user's rights from buying a KORTLEN mouse, including those concerning updates of its software.
§ 7 End of the right of use
If the user breaches this agreement, the right of use ends. The user must then delete the App from their devices.
§ 8 Final provisions
(1) The law of the Federal Republic of Germany applies. If the user is a consumer, this choice of law applies only insofar as it does not deprive them of the protection granted by the mandatory provisions of the law of the country in which they have their habitual residence.
(2) The language of the agreement is German.