Although Chiari malformation may be present with no symptoms at all, this crowding can cause a backup of spinal fluid in the spinal canal which often results in problems which may or may not change in the adult such as: Sub-occipital pressure headache, especially when coughing, sneezing or straining.
Patent applications involve lots of text and drawings, even for simpler inventions. The first step in the patent application process is to file a non provisional patent application, which involves paying attorney fees in the range of $5000 to $15,000 or more, depending on the intricacies of the invention. The amount you spend on a patent application will also depend on the market opportunities.
On the 4th anniversary of the filing date the patent must be renewed and every year after that. The fees for renewing in the 5th year are 50. It then goes up every year until the 20th year which costs 400. 20 years is the maximum period you can hold a patent. For your UK application, Patent Attorneys generally charge between 1000 and 2000 on top of the patent office fees to write and file your patent application. Generally it is likely to cost around another 2000 to pursue your patent to the point of being granted.