No legal requirement to be specific, but you won't both (a) get it granted and (b) successfully prosecute it if it isn't specific. A patent that you can't prosecute is essentially worthless paper. So you might as well start with it being specific otherwise you just wasted your time and money.
You are being highly misleading with the $8,000 number. Maintenance fees for standard patents are $1,600 at 3.5 years, $3,600 at 7.5 years, and $7,400 at 11.5 years. Then add in the search fees, examination fees, and issue fees ($600, $720, $960 for utility patents) and any other fees that might be needed in the examining process. That is $14,880 right there if you do it all on your own without an attorney and without any complications. Sorry that I rounded to $15k.
Your prior post provided quotes for FILING, not total prosecution and maintenance fees. The $8000 number is not misleading. It is an accurate representation of the cost of
preparing and filing a patent application of minimal complexity, as reflected by responses solicited from hundreds of patent firms by the leading IP organization in the U.S.
As for the specificity requirement - I was merely commenting on the legal inaccuracy of your prior post. Your comments re: being overly vague have some merit, but not in the context of a discussion of what is and is not legally required
to file a patent application. Moreover, the most common patent claim strategy is to seek claims of broad, medium, and narrow scope. To do that the specification should ideally include language that support such claims, i.e., which presents the invention in broad, medium, and narrow terms.
Re: useful EP strategies - there is no one size fits all strategy and where to file will depend on the technology and the business in question. That said, one can easily envision a scenario where seeking patent protection in a single EP country would be useful. For example, Germany is a huge manufacturer and exporter of machines. A German company might find a German patent (and only a German patent) useful, as it would prevent other German companies from making and exporting their technology. Sure - the products could be produced in other EP countries. But many German companies are set up such that their entire manufacturing base is in Germany. So a single German application may be considered quite useful to that company. It all depends on context.
Another useful limited country EP filing strategy would be where the technology in question concerns a regulated product that is only permitted and/or present in certain parts of the EPO. For example, France and a handful of other countries contain the highest concentration of nuclear plants in the EPO. It might be useful to limit the filing of a patent application drawn to nuclear technology to only the countries in which those plants are present, because that is where the market for the technology is located.
I wholeheartedly agree with you that people need to understand the costs of pursuing patent protection up front. That is precisely why I have a discussion with all of my clients re: the cost of pursuing patent protection. Even my largest clients are cost conscious, and cost is a major factor when they are deciding where to file.
As for smartphone patents - I actually have a lot of experience preparing and prosecuting patent applications in that technology area - ranging from updates to the 4G LTE standard, to 5G technology, to mobile device cryptography, to others. You are right to say that smart phone technology is a difficult and crowded area. But your quotes before were not for a preparing and filing an application for a complicated technology . You provided quotes for a filing a basic patent, which you later explain tacitly include costs associated with prosecuting, maintaining, etc. the application and any patent resulting therefrom. FWIW, in my experience the cost of
preparing and filing a relatively complicated smart phone patent application in the U.S. is not too much higher than what I quoted above. Usually they roll in right around ~$12,000 ($10,000 preparation, $2,000 filing). Filing corresponding EP, CN, JP cases typically costs ~$15,000 ($5000 for each country), inclusive of foreign agent fees. Note again - those numbers are not inclusive of prosecution costs.
Look - we are on the same page for the most part. I am just nitpicking the hell out of you because you are playing fast and loose with your terminology - which is irksome to me because I practice patent law. I know you mean well, but if you want to discuss legal issues you need to use specific and accurate terminology. Else all you are doing is asking for someone knowledgeable in the area to shoot holes in your statements. Cheers.