Worthless? Worthless in what way? If the invention or idea is great, why would the application or patent be worthless.
While is disagree with seniorjudge's 99.99% number, there is no getting around the fact that the overwhelming majority of patents fail to even provide enough of a return to pay for the costs of obtaining the patent in the first place. There are a number of reasons for this:
1. Many patents are simply "defensive" patents -- bascially, by building up a large enough patent portfolio, a company can avoid getting sued -- or at least force a settlement -- if they have a lot of patents that can be asserted back against anyone that might try and sue them.
2. And the flip side is "offensive" patents, where you can seek a settlement or licensing terms by simply overwhelming the other side with the sheer number of patents you have -- even if only one or two might really be valid and enforceable, the other side has to spend the money to analyze dozens or even hundreds, and it just makes sense to settle in most cases.
In these two cases, the value of each individual patent is rarely tested, and the value is in the portfolio, rather than in any individual patent.
3. However, for most individual or solo inventors, the reason why most patents are worthless can fall into one of two camps:
-- a poorly drafted or poorly thought-out patent may be so easy to design around that it is essentially worthless, because it is unenforceable; or
-- sorry to say, but most inventors have a very overly-optimistic view of the value of their invention in the marketplace.
Now, none of these things mean that YOUR invention is worthless, or that YOU are overly optimistic -- it just means that history shows that this is the case for most patents, and that's why seniorjudge wrote what he did (although I think he is overly pessimistic!).
Some patents and inventions are quite valuable, and a well-drafted patent on a key invention may be very valuable -- but most aren't, and that's a fact.
Question to all, is experience a big issue in preparing a non-provisional application?
Yes, because a failure to properly disclose your invention in the provisional could mean the loss of a priority date. This is a VERY big problem with people and practitioners who treat a provisional as a "throwaway" sort of application, and just throw something down to nail down a priority date. If such a "casual" application is filed, if the priority date every became a factor in a litigation down the road, that "casual" application could come back to haunt you.
Just FYI, at my firm, when we file a provisional, we draft the ENTIRE nonprovisional application, including the claims -- that's the ONLY real way you can make sure that your invention is fully disclosed and that your eventual claims will be fully supported by the specification. The only thing we don't finalize on a provisional is the drawings, we usually file with informal drawings -- but the spec and claims are COMPLETE.
Because of their limited experience, their prices are half of what others charge. This is a registered law firm. I figure, they know the law and are registered, what can possibly go wrong in writting a utility patent application?
What can go wrong? A lot. Claim drafting is more of an art than a science. It's easy to draft claims that will be "allowed" by the USPTO -- it's a lot harder to draft claims that will be allowed yet still provide any significant level of protection for your invention.
That said, lack of experience may not be an issue -- they may have a very talented patent drafter on staff -- and a lot of experience doesn't guarantee top results. But, on average, proper patent drafting is something that requires practice and, like everything, generally gets better with experience.
Ask them how they draft their provisional applications -- if they don't draft claims, ask them how they can be sure that the provisional properly discloses the invention and provides enough support for the claims.
Would there possibly be a legal issue (meaning, leaving my invention open to being stolen) in having a lawyer with limited experience in patent application writting?
The lawyer isn't going to steal your invention, as I noted before. If you are so worried about your invention being stolen, write the application yourself.