I agree with 96z28ss, looking at the pics,the hinges are not same or even close. People need to understand, that no matter of design, they still have to bolt up to factory bolt holes serve their purpose as factory,so in the end they might have simillar look,because of it compact constraints ,the moving parts can only have certain shape.
I don't know how Fesler came up with their version,but there is nothing wrong with variety and good competition,as long as it's not exact copy and all good quality stuff. However I can somewhat relate ,because I have some time in design and producing composite parts.But at the same time you can't expect or assume that you are the only company that will be making and selling hinges or any billet parts. There are plenty of companies with high-tech equipment and software that can design and produce parts out of billet or some exotic materials.I am a big fan of RB

Just keep at it,be creative and put out quality parts,you will succeed.
I will also say that Chris is a good vendor and anyone dealing with Fesler will get great customer service .