Patent pitfalls ... Can I? Should I? How should I NOT go about it? How do I evaluate law firms? How long will it take? How much will it cost?

SOM refers to the portion of the market that your business COULD actually capture, as you stated: "[the] % [you] can realistically achieve from the SAM." Let's use an analogy to break this down - and pretend you are talking about fishing instead of project management software. TAM refers to all the fish (that manage projects) in the sea. SAM are all the fish (that manage projects) within casting range of the dock you fish from (ie your solution is viable for them). SOM are the number of fish (that manage projects) you can reasonably catch within the amounts of time, energy, and bait you can allocate to fishing. The question within a question you ask about guidelines on believability is a great one. And, while I don't have a guideline or benchmark to share, I can confirm your instinct; ensuring that your projected SOM is reasonable is absolutely critical. The best way to project this is by having at least some of the equation variables grounded in reality - ie, actually catching some fish. If you can show how much it costs to acquire a customer, how much it costs to service that customer, and how much you'll make from that customer over a lifetime, you've got some great empirical evidence to show how you'll achieve growth within your SOM. I don't think of SOM as a target - it is rather the theoretical maximum number of customers or revenue I can achieve within the (sub)universe where my product or service adds value. In the end - the number is important - but not as important as how you present it, and how you'll approach it with your product. As an investor, you want to see more than just the answer - you want the thought process behind the answer. Was the founder thoughtful in their approach, did they look beyond the obvious while remaining pragmatic? Do they understand clearly why the SAM (macro-environment) and SOM (micro-environment) break out of the TAM in the proportions they've listed? More than happy to dive deeper on this.

This is a little hard to answer because it is so vague. It depends on the area, the market and the strength of innovation. I know that The App Guy has a terrific podcast at http://www.theappguy.co/ and is also trying to organize a community for App developers to sell their ideas. Let me know if I can be of further assistance to discuss patentability in terms of its value to getting a sale or license. What ever you do, don't spend money filing a full patent, just a provisional. Good luck.

First of all, what you have is a provisional patent **application**. For now, the provisional patent application is not publicly available. This can be a big advantage to you. You can use this time to improve your invention and file additional provisional applications. If you don't plan on making/practicing the invention yourself, you should make sure to try to think of everything possible regarding how that invention can be improved. This would (hopefully) come naturally to a practicing inventor. When you file your non-provisional application, your disclosure will be made public ("published") 18 months from the filing of the non-provisional. While your applications are not publicly available, I suggest waiting until you file your non-provisional application(s) to talk to others. Quite often, provisional applications do not have the detail or the scope that the non-provisional will have -- due to the time spent on getting drawings accurate and making sure everything is included in your non-provisional applications. It is best to have a complete application before talking to practicing companies. Sophisticated companies will take advantage of information not disclosed in your provisional application to file their own patent applications. If your applications are not publicly available (or even they are published), you should sign confidentiality agreements (non-disclosure agreements) with anyone you talk to about licensing or buying your invention. Keeping track of who you talked to with confidentiality agreements can be the basis for "notice" of the invention by an infringer -- when they eventually steal your invention. You can sell your idea anytime, but a provisional application is worth a lot less than a non-provisional application which is worth less than an allowed application or issued patent. Provisional applications are generally not as complete as they could be -- and require additional time and finesse to complete the non-provisional application. In terms of appearances, if you are not willing to put in the money to file the non-provisional application, the invention is likely not worth that much money. Companies as well as non-practicing entities may look at provisional applications, but not for long, and will not give you the kind of money that you may get from selling a fully examined patent. Of course, it depends on how good your invention is.

A provisional patent is good for two things. It is a date-stamped proof of invention and gives you time to determine whether to incur the cost of filing a full patent. Yes, so long as the individual component pieces you think are useful are sufficiently described in detail within the one general application, it sets you up to later claim utility patents for any and all of these, providing they really are unique. But in general, I would really caution you from spending time and money to file patents for a software company. I've built many innovative software products over 20 years of work in our industry and only filed one patent in my life, and even that patent is only to protect people from abusing a truly transformative and world-changing technology. That said, a provisional patent is inexpensive and if any expense is going to be incurred here, a catch-all is sufficient if you feel inclined to file anything at all. If your goal is an acquihire or acquisition, utility patents do actually make a difference in the acquirers valuation (at least for now) but if you're thinking about it from an actual defensive perspective, I'd really advise that it's not worth your time (and distraction) and money. The best defence is a great offence. Scale up, get great engagement from users who love your product and you'll be in a much stronger to fight competitors. Lastly, if you do decide to file a provisional patent, don't claim to anyone that you have I.P. You don't. :) Happy to talk through this in a call with you. Best of luck!

I am a patent attorney generally on the patent owner's side. Signing such a clause should make you nervous. You don't want to be responsible for the major company's infringement. The major company is likely getting more benefit out of using your software than your company is making by selling licenses. The previous gentleman's answer is incorrect. Anyone can be sued for patent infringement if they make, sell, or *use* the claimed invention. It depends on the claims in the asserted patent. Based on experience, it's much more likely that the larger entity would be sued for infringement. A patent infringement case could cost anywhere between $350k-$5M+ USD. http://www.cnet.com/news/how-much-is-that-patent-lawsuit-going-to-cost-you/ In order to properly answer your question, I would need to know why you feel it's "very unlikely" that someone would sue the major company for using your software. If the major company won't back down on this provision, the best thing you can do is determine if you need IP (defense) insurance. If a patent attorney determines that it is necessary, raise the price of your license and get IP insurance.