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.
Write and file your own patent application (the cheapest way) - total cost about $900 for most inventors to get an issued patent (USPTO fees only). Hire a registered patent attorney or patent agent to write and file a patent application for you (the most expensive way) - total cost $5,000-$10,000 mostly in attorney billing time.