L1B petition raised after h1b is applied by another employer any issues

My L1B validity : Till May 2013.

My current employer may apply for either L1B extension or may even ask toL1 raise another L1B Visa by April 2013. If I [apply](http://redbus2us.com/qa/3510/to-apply-h1-here-and-then-go-to-india-for-stamping?show=3544#) for H1B in 2013 finding some employers , will I be having any problem because of the L1B application of my current employer.

You will have L-1 and H-1 running in parallel. The petiion that gets approved later will determine your eventual status. So you need to be careful about it.