I am preparing now (myself) a provisional patent application. A patent attorney once told me I need to make the application “light” enough so that when a professional patent attorney later files the regular application based on the provisional application I wrote he won’t be too tied or restricted by it. Of course, it also shouldn’t be too general for it will be disqualified.
How do I find this proper balance?
How much can the patent attorney chnge the PPA when preparing the regular application?
Is it wise to write more than one claim in a PPA?
We wouldn’t advise on filing a provisional patent application let alone doing it yourself. You of course can do it, and you might do a great job, yet you might as well not. A non full application could draw certain limits on your patent down the road when you want to file it as a regular patent, and even more when you try to use it later as an asset or as a shield to protect your advantage against competitors. Doing it by yourself and not using the experience and knowledge of a killed professional could double the harm.