I have seen many logos that look like each other then you should suspect them all to copy.

I do not see anything in the link.
http://logos.co/design/royalty-free-vector-colorful-square-abstract-logos-by-cidepix-1387

Yes, you are the greatest designer, I'm sorry that I made ??you and you have challenged your work, Your work is 100% own creation. Good luck!