Good question. I don't have any specific answers but depending on your level of enthusiasm you might try any ethical means not disallowed by the regs (37 C.F.R.
§ 10.31,
§ 10.32,
§ 10.33). By my admittedly novice interpretation this includes:
* By "word": Talking about your practice every chance you get (carries the risk of making you bore in social settings and get you ostracized from parties)
* By "circular": in 21st century parlance, start a patent law blog (some of our members here have their own and maybe they can pipe in with respect as to whether their blogs successfully generate new business or only help make the competition better)
* By "letter": find some companies you would like to do business with, and send them a letter describing your experience, qualifications, and the service you offer, along with your general philosophies on seeking patent protection and what you see as the unique challenges in the field and why you are better-equipped to handle them than others
* By "advertising" in "public media": taking out an ad in a telephone directory, a legal directory, a newspaper, or other periodical, radio, or television, on the internet, starting your own Facebook group, etc., always making sure to include your name on any ad
* By proper "direct contact": cold-calling or setting up meetings, see "by letter" above
* By referral: you're buddy's a non-patent attorney, so she or he refers on all of his or her clients who want patent work done on to you
...keeping in mind with any of the above options that it would be a bad idea indeed to:
* defraud in any manner,
* deceive,
* mislead,
* threaten,
* exert undue influence,
* intimidate, or
* overreach through any of the above methods,
* name-drop a Congressional representative,
* offer TM services or any other non-patent legal services if you're only an agent,
* accept money or share fees for referrals except from non-profit referral services.
It really seems to me that none of the above methods would actually be very effective, though. They would probably only ever attract the crackpots and crazies coming to you with their hardshell fruit containers and whatnot demanding patents on their inventions, then
shooting up your office when you show them the prior art that renders their ideas unpatentable.

Getting good clients is more about networking, forging good relationships with people, and building a reputation through years of struggle accompanied by luck that results in outcomes that are so outstanding as to attract notice.
If you don't want to do all of that, maybe you just want to seek a position in-house where there's a never-ending supply of work.
