I tried searching for the topic via Google, but the only relevant search result that came up was our conversation right here in this thread.
You might perhaps ask
www.abbyy.com directly whether they support this. They're a big-shot company (even though Russian) and in theory, it should be in their interest to make the cooperation of their dictionary apps with e-reader apps such as Marvin as smooth as possible. So if there are no Lingvo URL launch schemes today, perhaps there'll be some tomorrow if there's enough interest in them from 3rd-party developers.