I did some more hunting into the Interbrick character. It would appear some of his current Switzerland-based business ventures are registered through "Blue Lakes Advisors SA" in Geneva. (So I call letterbox operation on this one.) However, I couldn't find any registration details for Koleda, but given the pattern of other businesses I suspect it's also been registered through them if it actually exists. In fact, I looked very long and very hard and I couldn't find any legal entity which would go by the name Koleda anywhere. And while not the complete list, this gives you a pretty good idea of some of the stuff he's been up to in Switzerland:
https://sogc.ch/#!/search/archive?keyword=Maxim%20Interbrick&executeInitialSearch=true
Since the documents are in French, let me summarise (no guarantee this is correct though, my French is very rusty):
The first Swiss venture he was tied to by name in the trade register is ALC Agency, which seems to be airport related advertising. However, this enterprise seems to have been disbanded after a few years (ALC Agency Sàrl was liquidated in 2011 after a
sketchy run). The only trace of this company I could find was
this snippet from himself. However, Adlux Sàrl does something very similar to ALC by the looks of it, so probably Adlux is some form of continuation business. Pretty much all his other businesses are also in this market, and he seems to have multiple legal entities for Adlux (Adlux Switzerland Sàrl, Adlux Holding SA, Adlux Sàrl - in liquidation) and EngageAd (EngageAd Sàrl, EngageLink SA). Not going to bother listing the rest since you can find it quite quickly if you start looking through the SOGC website. Now the interesting bit is that
these companies don't even seem to have a completed website in multiple cases, which seems a bit odd for a business in marketing or advertising. But then again, he might simply have a solid customer base and not really bother keeping those up to date, so I'm not really sure what to think of this. You can also find some trace of him in the UK if you search Companies House, but that seems to be related to his Swiss ventures.
Anyway, I suspect Koleda brought him in to do the initial advertising campaign (something he does seem to be reasonably good at) and that he's not really the brain behind this product. It'd be interesting to see who's actually behind Koleda, but I sadly can't find any business registration. If someone wants to hunt for the legal entity that's running the Latvian factory, you can probably find the company registration information here:
https://www.ur.gov.lv/lv/?v=en&v=en&v=en&v=en