Grey station: Sony wants to stop pre-launch imports of PSP. Photograph: Donna McWilliam/AP

Today's coverage of Sony's attempt to stop grey importing of PSPs has thrown up a couple of interesting points.

· A copy of the writ which Sony has issued against grey importers, which I saw earlier this week, made reading. The company is demanding details of every customer who has bought an imported PSP, and every supplier who sold one to importers. This morning Sony refuted claims that they might look to impound grey PSPs - but wouldn't tell me what they wanted to do with customer details...

· An aside to this whole story is the question "does Sony own the PSP trademark in Europe?". My research, which Sony refused to comment publicly on, showed that although they have applied to register the PSP and UMD trademarks - as long ago as 2003 - they still do not own the registered trademark rights in Europe. This doesn't change their legal action (which actually concerns the "PlayStation" trademark), but it does muddy the waters of their public statement, which states that "Sony Computer Entertainment holds all relevant trademark rights for PSP and UMD, and is confident of its trademark position."