This is not really "news" since it has been visible for what--a couple of weeks now? My guess is that some large investors want to accumulate more cheap shares so they are shorting it down today to pick up shares from cautious investors with stop losses in place--basically get it out of the weak hands. Long term this patent will make a ton of profit for ELTP. I'm not selling any shares this cheap!
Been said many times. And been ignored many times.
IF EVERYONE is expecting news on a particular date-=-and positive news-- the high expectations usually fall short. And all those holding just for that news decide all at once to move on if they did not get what they wanted.
If ELTP has anything to put out soon--- the sooner the better.