L1B Visa Extension filed last month - any chance of getting approved?

I am currently in USA working in a MNC and my employer has applied for my L1B visa extension. Just want to know what is the approval rate now-a -days for L1B visa extn? Also to inform you that, my employer does not file L1B extn at all…it was me among hundreds which got filed(may be due to fact that, I was part of design and development team of our company’s proprietary tool).

How much chance would be in my case of being approved?