Find a decent suit, get a hair cut, and make yourself look like the stereotypical successful business man / woman. Find out when your representative will be in town (most have multiple offices in their district), and go to a public meeting they are holding. Be pleasant, nice, and state your point. Followup with a letter and get others to write letters on the same subject. If you know one of the big campaign donors then get them to state the same thing.
http://www.house.gov/representatives/find/
You could also contact the sponsors of the recent (and weak) America Invents Act - Patrick Leahy (D-VT) and Rep. Lamar Smith (R-TX), but if you're not one of their constituents, they likely won't be too concerned with what you have to say.
If anyone else has other suggestions / tips on how to most effectively reach legislators to support patent reform, please share!