Having an uphill battle here! We are the manufacturer and IP owner, we're registered on the brand registry. These products have been listed by other sellers before we started getting involved on Amazon.
Now, information is incorrect, titles are inconsistent or wrong, some are (I believe incorrectly) listed in catagories which I'm repeatedly rejected from applying to sell, with no clear idea why.
For the ones I can add to my inventory, I've manged to fix the brand name on some, but usually I get an error relating to the EAN, which despite matching with GS1, throws an error and support just close my cases. I also get this when trying to list new products with our brand.
Many have old imagery that is different to the package that the buyer will get, which may cause a negative reaction. I've issued 'suggestions' for updates for the products I'm actually able to list, but these mostly get ignored by Amazon.
The worst is this one, where a seller has hijacked the listing, falsely claimed it as their brand, and changed the title to 'park' it so now nobody can sell it. Support won't help because I don't sell the product on Amazon, but because it has been put in this 'Gourmet Food' subcategory, I don't have approval, and my requests keep getting denied without explanation.
This is incredibly tiring and infuriating, I want to fix our listings so we can actually get some sales. It's a total mess and I can't get Amazon to fix obvious errors for products that we manufacture!
The only other option I can think of is to go down the IP route as, effectively, our brand is being falsely advertised (with things like outdated imagery) in a way that could hurt our reputation. I just don't know what else to do.