According to the U.S. Patent and Trademark Office, Nissan has filed for trademarks for cars named JX20, JX25, JX25h, and JX30.

Infiniti says that it’s standard practice to cover its bases with nomenclature, especially since so many automakers use alphanumeric names rather than real words. And the company has history to back that up—in the past several years, Nissan trademarked and then never used WX35, PX35, and DX35.

More worthy of reading into, however, are the numbers that represent engine displacements. The 25 could indicate either Nissan’s 2.5-liter four-cylinder engine or a 2.5-liter VQ-based V-6, like the one going into the Infiniti G25 soon. The “h” nomenclature pretty clearly points to a hybrid, again raising questions about whether it’s a four (as in the Altima hybrid) or a six. Infiniti is on the cusp of launching its first hybrid, the M35h, and a spokesman tells us that more hybrids are definitely part of the brand’s long-term strategy. And the 3.0? Nissan hasn’t made a 3.0-liter V-6 in years, although there is a Renault diesel V-6 with that displacement that’s being used in European-market Infinitis. It does raise the question, though, why would Infiniti put a 3.0-liter diesel making 406 lb-ft of torque in a car that also gets a four-cylinder (the 2.0)?

Finally, on full safari into speculation country, the question remains as to just what kind of car the JX would take shape as (assuming Infiniti does go ahead and build it). The “X” tells us it’s in the crossover or SUV stream, like the Infiniti FX, EX, and QX. It could be an Infiniti-ized version of the Nissan Juke, or perhaps a rear-wheel-drive crossover smaller than the EX and meant to compete with the BMW X1. And there’s also the chance that it’s a raised coupe, like the new Land Rover Range Rover Evoque. The JX could be for Europe only, although we found that Nissan has applied for trademarks on all four variations in Canada as well.

We’ll keep our eyes out for any news from Infiniti. In the meantime, thanks to the same Trademark Office filings, we know we can look forward to upcoming Nissan and Infiniti concepts called Ellure, TownPod, and Linq. Feel free to speculate on those in the comments.