Newest sealed read: 2026-09-07. We read this source every day. We hold 1 sealed run going back to 2026-09-07.
What this page is61 rows held · newest sealed read 2026-09-07
- 241 USPTO-registered patent practitioners are listed with an address in Wilmington, DE: 173 attorneys and 68 agents.
- 90 distinct organizations have at least one registered practitioner here; the largest is InterDigital Holdings, Inc..
- Available — $350 for 12 months to be the Featured patent firm in Wilmington, DE.
- 56 registered practitioners here list no firm, or list only their own name; we withhold those names and count them together rather than publish a private person's name as if it were a business.
- Roster data from the USPTO Office of Enrollment and Discipline as of 2026-09-07. US Tech Automations is not the USPTO. A listing is not an endorsement. This is not legal, tax, or professional advice.
Real rows out of our sealed copies
These are rows we read out of dated copies we keep ourselves. The live source shows today only, so once a row moves, what it said before is gone from the place you would go to look.
| Firm | Registered practitioners |
|---|---|
| InterDigital Holdings, Inc. | 13 |
| Devlin Law Firm LLC | 8 |
| The Chemours Company | 8 |
| DuPont | 6 |
| Fish & Richardson P.C. | 6 |
| Panitch Schwarze Belisario & Nadel LLP | 6 |
| Drinker Biddle & Reath LLP | 5 |
| E I Du Pont de Nemours and Company | 5 |
| Incyte Corporation | 5 |
| Barnes & Thornburg LLP | 4 |
| E. I. du Pont de Nemours and Company | 4 |
| IFF | 4 |
| Potter Anderson & Corroon LLP | 4 |
| Buchanan Ingersoll & Rooney | 3 |
| DuPont de Nemours, Inc. | 3 |
| E I Dupont De Nemours and Company | 3 |
| E I du Pont de Nemours and CO. | 3 |
| E.I. duPont de Nemours and Company | 3 |
| Interdigital Inc. | 3 |
| McCarter & English, LLP | 3 |
| Morris, Nichols, Arsht & Tunnell, LLP | 3 |
| Shaw Keller LLP | 3 |
| Stamoulis & Weinblatt LLC | 3 |
| Tyco Electronics Corporation | 3 |
| Dupont Company | 2 |
| E I Du Pont de Nemours and Co, Inc. | 2 |
| E. I. Du Pont de Nemours and CO | 2 |
| E. I. DuPont De Nemours and Company | 2 |
| Fish & Richardson, P.C. | 2 |
| Morris James LLP | 2 |
| The Chemours Company FC, LLC | 2 |
| Womble Bond Dickinson (US) LLP | 2 |
| Ashland Inc. | 1 |
| AstraZeneca Pharmaceuticals LP | 1 |
| Buddi, Ltd. | 1 |
| Chemours FC LLC | 1 |
| Citi | 1 |
| Connolly Gallagher LLP | 1 |
| DLA Piper LLP | 1 |
| Drinker Biddle & Rath LLP | 1 |
| DuPont Agriculture & Nutrition | 1 |
| DuPont Specialty Products USA, LLC | 1 |
| E I Du Point de Nemours and CO | 1 |
| E I Du Pont de Nemours & Company | 1 |
| E I DuPont De Newmours and Company | 1 |
| E I DuPont de Nemours | 1 |
| E I Dupont De Nemours and Copmany | 1 |
| E. I DuPont de Nemours and Company | 1 |
| E. I. DuPont de Nemous and Company | 1 |
| E.I, Dupont de Nemours | 1 |
| E.I. DuPont & Co., Inc. | 1 |
| E.I. DuPont de Nemours & Co. | 1 |
| E.I. du Pont de Nemours INC | 1 |
| E.I. du Pont de Nemours and Company | 1 |
| Edward Leigh Hunt, Attorney at Law | 1 |
| Encadria Staffing Solutions | 1 |
| Faegre Drinker Biddle & Reath LLP | 1 |
| Fish & Richardson | 1 |
| Flaster Greenberg PC | 1 |
| Freeman Intellectual Property Law, LLC | 1 |
| Individual practitioners (names withheld) | 56 |
Who published the data on this page
- Practitioner roster: USPTO Office of Enrollment and Discipline bulk roster download, read fresh at each site build. See SOURCES.md for the licence terms quoted from that page.
What this page cannot tell you
- We show organizations only. We never publish a registered practitioner's own name, home address, or phone number, even when the roster lists one.
- Firm names are grouped by spelling after light punctuation cleanup, not by any legal-entity check: “Acme Inc” and “Acme, Inc.” are folded together, but two unrelated firms that happen to share a name are not told apart.
- Our automatic test for “this reads as a person's own name, not a firm” is imperfect. It correctly protects solo practitioners, and it also mistakenly withholds a small number of real company names (for example “Boston Scientific” and “GE Healthcare”); those counts are folded into Individual practitioners along with everyone who listed no firm.
- The USPTO updates its roster on its own schedule; our copy is only as current as the date stamped on this page.
- Registration to practice before the USPTO is not the same as being licensed to practice law in any state, and a listing here is not a recommendation.
- A firm's count here is only its USPTO-registered patent attorneys and agents at this city; it says nothing about the firm's total headcount or its non-patent practice.
See the file before you pay
You do not have to take our word for what is in the file. Here are 25 rows of the real thing, carrying all 3 of its columns, cut out of the dated copies we sealed ourselves. Nothing in it is made up and nothing in it is tidied up.
- Open the 25 rows as a CSVA plain spreadsheet file. It saves to your machine rather than painting itself into a browser tab, and it opens in Excel, Numbers or Google Sheets.
- The same 25 rows as JSONThe same rows again, laid out for reading with code.
What arrives after you pay: a person emails you what you asked for as a CSV — the same plain spreadsheet as the sample file above, not a login and not a web page — within one working day of your payment.
What you would be paying for: $350 for a 12-month Featured listing in one city, naming your firm and website at the top of that city's page. One Featured firm per city; if the city you name already has a Featured firm when we process this, nothing runs and the payment is refunded on request within 14 days. Records may lag the source roster by up to one site build. After you pay we email you within one working day to confirm the city and firm name; the listing goes live within 15 minutes of payment. Still not there after 15 minutes? Reply to your Stripe receipt.
These 25 rows are a slice of the file, not the whole of it. What we cannot show you here is how far back it goes: that is the part you are paying for.
Claim the Featured slot in your city
$350/12mo · the USPTO roster is read fresh at every site build; a Featured listing itself runs 12 months
Buy — $350 one-off$350 for a 12-month Featured listing in one city, naming your firm and website at the top of that city's page. One Featured firm per city; if the city you name already has a Featured firm when we process this, nothing runs and the payment is refunded on request within 14 days. Records may lag the source roster by up to one site build. After you pay we email you within one working day to confirm the city and firm name; the listing goes live within 15 minutes of payment. Still not there after 15 minutes? Reply to your Stripe receipt.
Rather ask first? Email operations@ustechautomations.com. Say which city; we reply saying whether it is still available.
More from this feed
- Up one level: Patent practitioner directoryThe whole feed, its price, and how the file arrives.
- What is and is not in this feedEvery source we read for it, how often, and the ones we refuse to collect.