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@iwanderela: Normally patent prosecution is a long drawn process, but there is a procedure for accelerating the process, which at best takes a couple of years for the final grant.

Okay, and what’s the process of accelerating it? What if they will not grant it? What will happen?

The acceleration requires high filing fee and some extensive pre-examination documentation. Patents are usually granted if there is no prior art related to the invention. Since there are significant costs involved in patent prosecution, applicants usually do not file frivolous applications. Proven disruptive inventions are usually never denied. Incremental innovations may be allowed by narrowing the scope of the claims.