I would like to know why my illustration was rejected because of, "Intellectual Property Refusal".

As ​@Nancy OShea  pointed out certain keywords might trigger the system.
For example: Royal Purple is trade marked. 

The water looks cool.

Hi ​@kirs10dee 

I do not see an IP issue. I see a quality issue. This element that I assume is a pattern on the tube appears to be floating over the tube with it’s own shadow.

I am not sure what these are with floating over the water with shadows.

Best wishes
Jacquelin

1. Life Saver is trademarked by the Wriggly Company.
2. Lifesaver is trademarked by a folding knife & seatbelt cutter.  

Your metadata (keywords, titles) can’t contain any protected brand names. 

https://helpx.adobe.com/stock/contributor/get-started/manage-your-account/intellectual-property-violation.html

Possibly the Gemini logo. I suppose it could be debatable since the shape isn’t identical, but the moderator might be taking extra precautions. And they don’t really work as reflections in any case, so you might just try removing them.

I think it is stuck on that. I had three fantasy pictures that were also Rejected for intellectual property.