USPTO Practice · Who Can Help You
Patent Agent vs. Patent Attorney
Both are registered with the USPTO and can file and prosecute patent applications. The critical difference is what happens when a dispute arises — and what that means for your budget.
The key difference
A patent agent can file and prosecute your patent. A patent attorney can do that plus represent you in court, draft license agreements, and give general legal advice. If you only need a patent filed, an agent often costs less for the same quality work.
Qualifications
What it takes to become each
Capability comparison
What each can do
| Task | Agent | Attorney | Notes |
|---|---|---|---|
| USPTO prosecution | ✓ | ✓ | Filing, responding to OAs, appeals to PTAB |
| Patent application drafting | ✓ | ✓ | Specification, claims, drawings guidance |
| Patent searches | ✓ | ✓ | Prior art, FTO, patentability |
| PTAB proceedings (IPR, PGR) | ✓ | ✓ | Inter partes review, post-grant review |
| Patent licensing contracts | ✗ | ✓ | Drafting/reviewing license agreements |
| Patent litigation | ✗ | ✓ | Federal court infringement suits |
| Demand letter response | ✗ | ✓ | Legal advice on infringement claims |
| IP due diligence for M&A | ✗ | ✓ | Legal opinion letters for transactions |
| Corporate/employment law advice | ✗ | ✓ | PIIA, assignment agreements, startups |
| Trademark & copyright work | ✗ | ✓ | Agents are limited to USPTO patent matters |
Cost
What you can expect to pay
Patent Agent
Hourly rate
$150–$350/hr
Utility patent (prep + filing)
$5,000–$9,000
Office Action response
$1,500–$3,000
Patent Attorney (mid-size firm)
Hourly rate
$350–$600/hr
Utility patent (prep + filing)
$10,000–$16,000
Office Action response
$2,500–$5,000
These are typical ranges for qualified practitioners. Large law firm attorneys (Am Law 200) bill $600–$900+/hr for patent prosecution. Solo patent agents specializing in certain technologies may charge more than mid-firm attorneys. Price does not reliably predict quality — ask for representative prosecution histories instead.
Decision guide
When to use a patent agent vs. attorney
Finding the right person
How to find and vet a patent practitioner
Verify USPTO registration
Search the USPTO Practitioner Directory (oedci.uspto.gov/OEDCI/) before signing anything. Any unregistered person who drafts patent applications is committing unauthorized practice before the USPTO — this can invalidate your applications.
Match technical background to your invention
A patent practitioner's technical degree matters. A PhD chemist who became a patent agent is not ideal for a semiconductor patent. Ask specifically: 'What is your technical background in [your area]?' and 'How many applications have you filed in this field?'
Ask for a sample prosecution history
Request a redacted prosecution history — the complete file wrapper from a relevant application they handled. Review the claims they drafted and how they responded to office actions. Vague, overly narrow claims suggest poor drafting.
Discuss claim drafting philosophy
Ask: 'How do you approach claim scope?' A good practitioner drafts broad independent claims with meaningful fallback positions, not just product-specific narrow claims. If they don't understand the strategic value of claim hierarchy, move on.
Clarify scope of representation up front
If you hire an agent and later need litigation or licensing advice, you will need to bring in an attorney. Clarify this at the outset. Some agents work under attorney supervision; others are fully independent. Know which arrangement you have.
FAQ
Common questions
What is the difference between a patent agent and a patent attorney?
Both patent agents and patent attorneys are registered to practice before the USPTO (United States Patent and Trademark Office) and are qualified to prepare, file, and prosecute patent applications. The key difference is that a patent attorney holds a law degree (JD) and is licensed to practice law in at least one state, which allows them to represent clients in patent litigation (lawsuits), handle patent licensing contracts, and provide general legal advice. A patent agent does not hold a JD (though they may have a technical degree) and cannot litigate or provide general legal advice — they are limited to USPTO practice. Both must pass the USPTO patent bar (registration examination) and have a qualifying technical background in science or engineering.
Can a patent agent represent me in court?
No. Patent agents cannot represent clients in federal court patent litigation. Patent infringement lawsuits are handled exclusively by patent attorneys (or patent litigators, who are attorneys who specialize in patent disputes). If you receive a patent infringement lawsuit or demand letter, or if you want to assert your patent against an infringer, you need a licensed patent attorney — specifically a patent litigator. Patent agents handle only USPTO proceedings (prosecution, inter partes review, patent appeals).
How much does a patent agent cost compared to a patent attorney?
Patent agents typically charge $150–$350 per hour, compared to $350–$600 per hour for patent attorneys at mid-size firms and $500–$900+ at large firms. For a full utility patent application (preparation and filing), a patent agent might charge $5,000–$9,000 while an attorney at a large firm might charge $10,000–$20,000 for the same work. The price difference reflects overhead, market positioning, and the attorney's ability to provide broader legal services — not necessarily a difference in prosecution quality. Many excellent patent drafters are agents.
How do I verify that someone is a registered patent agent or attorney?
The USPTO maintains a public register of all registered patent practitioners. You can search the USPTO's Online Patent Practitioner Directory at oedci.uspto.gov/OEDCI/ to verify that a person is registered, their registration number, and whether they are in good standing. Anyone claiming to help with patent applications before the USPTO who is not on this list is not authorized to practice before the USPTO and may be committing unauthorized practice of law. Always verify before engaging a patent professional.
When should I hire a patent attorney instead of a patent agent?
You need a patent attorney (not just an agent) in these situations: (1) You are facing or considering patent litigation — suing or defending a patent infringement case; (2) You have received a cease-and-desist or demand letter alleging infringement; (3) You need to negotiate patent licenses, cross-licenses, or technology transfer agreements with significant legal terms; (4) You need comprehensive IP strategy advice that touches on securities law, employment law, antitrust, or corporate structure; (5) You are going through an M&A transaction where the acquirer requires legal representations about your IP portfolio. For pure patent prosecution (filing and responding to USPTO office actions), a qualified patent agent can perform the same work as an attorney.