Germany has a law called Arbeitnehmererfinderrecht, employee-inventors right that handles the rights of an employee who invents something at work. Basically, it says as an amployee you have to report a (possible) invention that is connected to your work. You employee ca nthen decide wether to apply for a patent, treat the invention as an inernal trade secret, or leave the invention to the inventor (who may then apply for the patent). If the employer patents the invention, the employee has the right to be named as inventor in the patent to receive some compensation.
Now, my (german) employer has an American parent company. So I wonder if, should I ever make a proper invention at work, there's anything legal that stops my employer from handing the idea up the chain to the parent company, leaving me out of the loop*. I'm not asking for a definite legal advice on the topic. I'm asking wether there are maybe relevant cases that can give me an indication what protection the law ofers me, and what I should look out for.