At times console manufacturers and game publishers trademark some strange stuff. This is one of those times, as what Sony filed to register with the Japanese Patent and Trademark Office isn't really a mark or a brand, but the PS4's background graphics of the standard "Flow" theme.

The application was filed on November 27th and just published, with the picture you can see at the bottom of this post.

Apparently Sony thought that the "Flow" graphics are unique enough to warrant trademarking them, as a similar design used on other products would cause confusion.