I find that extremely hard to believe. If you invent a novel type of bicycle gear mechanism, German patent law requires you to write a tutorial on the most cost effective way you found to machine each part, the particular grade of steel you found to be the best trade-off between price and performance to maximize profit, and your process for assembling it in the factory broken down into the step performed at each worker's station? Do they make you submit your CNC programs directly to the patent office for publication? This is all potentially extremely valuable IP that's not going to be found in the patent filings.
