| Business | Phone |
| Takeuchi & Kubotera Llp 200 Daingerfield Rd 202, Alexandria 22314 | (703) 684-9777 |
| Siemens Patent Svc 4600 Duke St 328, Alexandria 22304 | (703) 370-6282 |
| Micro Patent Inc 1800 Diagonal Rd # 180, Alexandria 22314 | (703) 521-1010 |
| Lucas & Assoc 3110 Mount Vernon Ave, Alexandria 22305 | (703) 548-5475 |
| Kelly Donald Grant 515 King St, Alexandria 22314 | (703) 548-8213 |
| Lacasse & Assoc 1725 Duke St 650, Alexandria 22314 | (703) 838-7683 |
| Hauptman Kanesaka Berner 1700 Diagonal Rd 300, Alexandria 22314 | (703) 519-9785 |
| Pro Patents 6621 Wakefield Dr, Alexandria 22307 | (703) 660-9660 |