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The USPTO exam — officially the Examination for Registration to Practice in Patent Cases, and commonly called the patent bar — is the test an individual must pass to become a registered patent practitioner authorized to prosecute patent applications before the United States Patent and Trademark Office.
It is not the same as “patent examination,” the process by which a USPTO examiner reviews a filed application for novelty, obviousness, and eligibility (that process is covered separately in CASRAI’s guides on patent filing and prosecution costs and patent novelty under 35 U.S.C. § 102). This guide covers the registration examination itself: who is eligible to sit for it, what it tests, what it costs, and — because CASRAI’s audience is research administrators rather than aspiring patent agents — why registration status is something a technology transfer office (TTO) needs to understand when it engages, hires, or evaluates outside patent counsel.
What is the USPTO registration examination?
Formally, it is the Examination for Registration to Practice in Patent Cases Before the United States Patent and Trademark Office. Passing it — combined with meeting a technical/scientific background requirement and a moral-character review — is what allows a person to represent inventors in front of the USPTO: filing applications, responding to office actions, and otherwise conducting the back-and-forth with an examiner that is generally called patent prosecution. The exam itself tests familiarity with USPTO procedure, not scientific or engineering knowledge: candidates are examined on the Manual of Patent Examining Procedure (MPEP), the patent statutes (35 U.S.C.), USPTO regulations (37 CFR), and the USPTO’s rules of professional conduct for practitioners. The USPTO’s Office of Enrollment and Discipline (OED) administers registration, oversees the exam, and enforces practitioner discipline.
Who can sit for the exam: the technical-background categories
Before anyone can register for the exam, the USPTO requires proof of a scientific or technical background, evaluated under one of several categories set out in the USPTO’s General Requirements Bulletin. These are the commonly used pathways:
| Category | Basis for eligibility |
|---|---|
| Category A | A bachelor’s, master’s, or Ph.D. from an accredited U.S. institution (or recognized foreign equivalent) in a technical subject the USPTO accepts outright — for example biology, chemistry, computer science, most engineering disciplines, or physics. |
| Category B | A degree in a different subject, satisfied instead by documenting a specified number of semester hours of qualifying coursework in physics, chemistry, biology, or related science subjects. |
| Category C | Passing scores on the Fundamentals of Engineering (FE) exam, combined with a bachelor’s degree, used as an alternative evidence path where the degree itself doesn’t fall cleanly into Category A. |
| Category D | A more recently established, narrower pathway limited to design patent practice only, based on a degree in a recognized design-related subject — this does not confer authority to prosecute utility patent applications. |
Exact accepted degree lists and coursework thresholds are set out in the USPTO’s General Requirements Bulletin (GRB) and are revised periodically, so anyone actually applying should confirm current requirements against the live GRB on uspto.gov rather than relying on a secondary summary — this is exactly the kind of detail that changes without much notice and is easy to get wrong from memory.
What Category B actually requires
Category B is where most non-obvious cases land, and the GRB sets it out as four alternative coursework routes. An applicant holding a degree in a subject outside the Category A list satisfies the requirement by documenting one of:
- Option 1 – 24 semester hours in physics, accepting only physics courses intended for physics majors.
- Option 2 – 32 semester hours made up of 8 semester hours combining chemistry or physics, at least one course including a lab, plus 24 semester hours in biology, botany, microbiology or molecular biology.
- Option 3 – 30 semester hours in chemistry, accepting only chemistry courses intended for chemistry majors.
- Option 4 – 40 semester hours made up of 8 semester hours combining chemistry, physics or biology, at least one course including a lab, plus 32 semester hours of chemistry, physics, biology, botany, microbiology, molecular biology or engineering.
Several mechanical rules trip applicants up. Only courses taken for science or engineering majors count. Only grades of C- or better are accepted. Quarter or trimester credit hours convert to semester hours by multiplying by two thirds. Every course relied on needs an official course description concurrent with the year it was taken, supplied alongside an official transcript bearing the institution’s stamp or seal – a diploma, a copy of a diploma or an unofficial transcript will not do. Under Option 4 the GRB accepts up to four semester hours of design engineering or drafting, and accepts computer science courses that stress theoretical foundations, analysis and design with substantial laboratory work, but those courses cannot substitute for the eight required hours of chemistry or physics. The GRB also lists what is typically not accepted, including psychology and sociology, anthropology, astronomy, public health, management and business administration, courses on how to use software, and courses in data management or management information systems.
Category A itself has a wrinkle worth knowing: a computer science degree only qualifies if it is a bachelor of science from an accredited institution. The Office will, however, accept degrees whose transcripts demonstrate equivalence to a listed subject – the GRB’s own examples are molecular cell biology for biology, and materials science and engineering for materials science.
Category C rests on passing the Fundamentals of Engineering test, which is developed and administered by state boards of engineering examiners rather than by any federal agency; official FE results plus an official transcript showing the award of a bachelor’s degree are both required. Category D, for design patent practice only, accepts a degree in architecture, applied arts, art teacher education, fine or studio arts, graphic design, industrial design or product design.
Citizenship and limited recognition
Registration itself is restricted. Only U.S. citizens and lawful permanent residents may be registered to practise in patent matters, with a narrow reciprocity exception under 37 CFR 11.6(c) – the GRB states that the Canadian Intellectual Property Office is presently the only patent office recognised as offering substantially reciprocal privileges. Other non-citizens residing in the United States may instead apply for limited recognition under 37 CFR 11.9(b), which requires documentary evidence that immigration authorities have authorised them to be employed or trained specifically in preparing and prosecuting patent applications; an authorisation still pending at the time of application results in denial of admission to the exam. Someone holding limited recognition must say so in any published biography and may not describe themselves as registered. This is directly relevant to a TTO considering an international postdoc or staff scientist for an in-house prosecution role.
How to apply: the registration process step by step
The exam is not something you simply book. Admission is granted by OED first, on the strength of the technical qualifications above, and only then do you schedule a seat.
- File the application. Apply online through the USPTO’s Applicant Portal or on Form PTO-158, with the $118 non-refundable application fee, the $226 registration examination fee, and the transcripts and course descriptions establishing your scientific and technical qualifications. The application also includes a background-information section used for the moral-character evaluation.
- OED reviews it, typically in four weeks or less. If the application is incomplete you get a letter explaining what is missing and 60 days to supply it. If it is disapproved, the $226 examination fee is refunded but the $118 application fee is not.
- Receive the notice of admission, which sets the window in which you must schedule and sit the exam – generally about 90 days from the admission date. Ninety-day extensions are available for a fee.
- Schedule with Prometric and pay the $221 administration fee at the point of booking. Rescheduling within your window is free 31 or more days before the appointment, costs $60 between 6 and 30 days out, and costs the full $221 inside 5 days.
- Sit the exam at a commercial test centre, year-round, on a date and time you choose.
Because admission has to be granted before a seat can be booked, the realistic lead time from filing to sitting is measured in months, not weeks – a point worth making to a faculty member or staff scientist who assumes they can register and test in the same quarter.
Exam format and passing score
Per the USPTO’s own applicant guidance, the exam consists of 100 multiple-choice questions, of which 90 are scored and 10 are unscored “beta” questions used by the USPTO to evaluate future exam content (candidates aren’t told which 10). A candidate needs to answer 70% of the scored questions correctly — 63 of 90 — to pass. The exam is computer-based, delivered at Prometric test centers nationwide, and offered year-round on a date and time the applicant selects rather than on fixed administration dates. Unofficial results are provided immediately after the exam; a candidate who does not pass may request a review of the incorrect scored answers within 60 days, under 37 CFR § 11.7(e).
The GRB adds the details that shape how the day actually runs. The 100 questions are split across two three-hour sessions – 50 in the morning and 50 in the afternoon, six hours in total – and each question offers five answer choices rather than the four common on other standardised tests.
The most misunderstood feature is that the exam is open-reference. Candidates may not bring any documents, materials or electronic devices into the room, and Prometric provides a locker for anything not permitted; but the MPEP and the other reference materials the questions are drawn from are available on the computer delivering the exam. The exam is therefore a test of whether you can navigate and apply the procedure under time pressure, not of whether you have memorised it. OED announces, in the Official Gazette and on uspto.gov, the date on which updated reference materials begin appearing on the exam and which MPEP version and other published policy materials the questions are based on – so a candidate’s first preparation step is confirming which edition is currently being tested. Where published USPTO policy and procedure reference material conflicts with the MPEP, the published material controls.
Beyond the MPEP, the GRB directs candidates to be familiar with the patent statutes and the USPTO rules of practice at 37 CFR Parts 1, 3, 11, 41 and 42, and notes that the exam may include questions on the standards of ethical and professional conduct applicable to registered practitioners. The USPTO will not counsel applicants on the substance, and does not identify or recommend preparation courses.
What it costs to sit for the exam
Based on the USPTO’s current published fee schedule for practitioner registration, the fees to apply for and sit the exam are:
| Fee | Amount | When it applies |
|---|---|---|
| Application fee | $118 | Filing the application to sit for the exam |
| Registration examination fee | $226 | Scheduling the exam itself |
| Prometric examination administration fee | $221 | Paid to the third-party test administrator, Prometric |
| Registration/limited-recognition grant fee | $226 | Paid only after passing, to complete registration |
| Review session (optional, if not passed) | $300 | To review incorrect scored answers |
That puts the cost to sit for the exam at roughly $565 (application + exam + Prometric fees), and the total cost of becoming a registered practitioner, if the exam is passed on the first attempt, at roughly $790. These figures reflect the USPTO’s own fee schedule as published on uspto.gov and are subject to periodic revision — confirm the current schedule before budgeting or advising an inventor or trainee on cost.
Two fees not in the table above are worth flagging. An applicant whose background raises moral-character issues pays a substantially higher application fee – $1,806 under 37 CFR 1.21(a)(10) rather than $118 – and Prometric’s rescheduling charges ($60 at 6 to 30 days out, $221 inside 5 days) can add to the total for anyone whose plans move.
After the exam: results, registration and the moral-character review
Passing the exam is not the same as being registered, and the gap between the two is where most of the remaining process sits.
- Results. Unofficial results appear at the test centre immediately on finishing. Official notice from the USPTO generally follows within five business days.
- The registration filing. A successful candidate must submit a completed Data Sheet and an Oath or Affirmation to OED, together with the $226 registration fee, within two years of the mailing of the notice of results. Miss that window and the exam has to be retaken.
- The moral-character investigation. Final approval turns on the OED Director’s determination that the applicant is of good moral character and reputation, as required by 37 CFR 11.7. As part of that process, and under 37 CFR 11.8(a), OED publishes the names and postal addresses of those who have passed and are seeking registration, specifically to solicit information about their character and reputation. The comment period runs 45 days.
- The certificate. Absent evidence of a lack of good moral character, the certificate of registration and welcome letter generally arrive about three months after passing, and the practitioner’s name and correspondence address are published in the Roster of Attorneys and Agents.
- Agent or attorney. On completing this process you are registered as a patent agent, or a design patent agent if you qualified under Category D. To be registered as a patent attorney instead, you file with your Data Sheet a certificate of good standing from the highest court of a state, issued within the previous six months.
One compliance point matters for institutions: a candidate may not hold themselves out as a registered practitioner until OED has given final approval. A TTO that lists a newly successful staff member as a patent agent on a website or engagement letter before the certificate issues is publishing a claim the USPTO has not yet authorised.
If you do not pass
An unsuccessful candidate may schedule an optional review session, at which they can view – but not copy, and without taking notes – the scored questions they answered incorrectly. Questions answered correctly and questions left blank are not reviewable. The session runs two and a half hours, costs $300 payable to Prometric, and must be scheduled and completed within 60 days of the mailing date of the notice of results. Only one review session is permitted per exam taken, under 37 CFR 11.7(e).
Reapplying means filing a fresh Form PTO-158 with another $118 application fee, though supporting documents already on file with OED need not be resubmitted – only updated where something has changed. Under 37 CFR 11.7(b)(1)(ii) a candidate must wait 30 days after the date of the last examination before retaking it. Separately, the USPTO’s practitioner guidance currently records a temporary waiver, under 37 CFR 11.3(a), of the 37 CFR 11.7(b)(2) provisions that would otherwise impose an additional waiting period between attempts and cap attempts at five without a petition to the OED Director. That waiver is time-limited and stated to run “until further notice”, so anyone planning a fourth or fifth attempt should check whether it is still in force rather than assume it.
Patent attorney vs. patent agent: what passing the exam actually authorizes
Passing the registration exam does not by itself make someone a “patent attorney.” It makes them a registered patent practitioner, and which specific title they receive depends on whether they are also a licensed attorney:
- Patent attorney — a person who is both a member in good standing of a state bar (verified with a certificate of good standing from that state’s highest court) and a registered USPTO practitioner. A patent attorney can prosecute patent applications before the USPTO and provide general legal advice, draft and negotiate licensing or assignment agreements, and represent a client in federal court patent litigation (subject to that specific court’s own admission rules).
- Patent agent — a person who has passed the registration exam and met the technical-background requirement but is not a licensed attorney. A patent agent can prosecute patent applications before the USPTO on the same footing as a patent attorney for that specific function, but cannot give general legal advice, cannot represent a client in court, and is generally not the right choice for drafting the licensing, assignment, or sponsored-research agreements that sit around a patent rather than the application itself.
Both categories appear together on the USPTO’s public roster once registered — the exam and the underlying technical-background requirement are the same for both; the attorney/agent distinction is purely about whether the person also holds a separate state law license.
Why this matters for research institutions and technology transfer offices
CASRAI’s audience is more likely to be evaluating or working alongside patent practitioners than sitting for the exam themselves, but the distinctions above have practical consequences for a TTO:
Verifying a practitioner’s registration status
Before engaging outside patent counsel — or when a self-described “patent consultant” or invention-promotion firm approaches a faculty inventor directly — a TTO can and should confirm registration status. The USPTO’s Office of Enrollment and Discipline maintains a public roster of registered patent attorneys and agents, searchable through USPTO’s patent practitioner resources. Confirming a registration number and that a practitioner is in good standing (not suspended or excluded by OED) is a low-cost due-diligence step before signing an engagement letter, and it’s the single most direct way to distinguish a legitimate registered practitioner from an unregistered “invention promotion” service, a category the USPTO and FTC have both warned inventors about separately from anything covered here.
Matching the practitioner to the task
Because patent agents cannot provide general legal advice or represent the institution in litigation, a TTO that uses in-house or contract patent agents for routine prosecution work still needs attorney involvement for licensing negotiation, infringement disputes, and anything requiring representation in court. Institutions that budget for outside patent counsel should track which invoices reflect attorney-rate work versus agent-rate work, since agent time is typically billed at a lower rate for the same prosecution tasks an attorney could also perform.
In-house patent agents
Some larger TTOs employ a registered patent agent directly, often a staff member with a relevant technical degree, to handle routine prosecution and reduce reliance on outside counsel for lower-complexity filings. Understanding the eligibility categories above is directly relevant to that hiring decision — a candidate’s technical degree needs to clear Category A or B (or FE-exam-based Category C) before they are even eligible to sit for the exam, independent of whether the institution ultimately supports them through exam preparation.
If you meant “patent examination” instead
If what you’re actually looking for is how the USPTO examines a filed patent application — office actions, prior art rejections, responses, and allowance — that’s a different topic from the registration exam covered above, and CASRAI covers it elsewhere: see 35 U.S.C. § 102 and novelty for what an examiner checks a filing against, provisional patent applications for the filing that often precedes formal examination, and cost of filing a patent for what USPTO examination fees actually cover.
Frequently asked questions
Is the patent bar exam hard to pass?
The USPTO does not publish an official current pass rate, and third-party estimates vary and change over time, so CASRAI does not cite a specific number here. What is well established is the format: 90 scored questions covering the MPEP, patent statutes, and USPTO regulations, with a 70% passing threshold — most candidates prepare with dedicated study materials before sitting for it rather than relying on general patent-law familiarity.
Do you need a law degree to take the USPTO exam?
No. A law degree is not required to sit for the registration exam or to become a registered patent agent — what’s required is meeting one of the technical-background categories above. A law degree (plus state bar admission) is only required for the separate “patent attorney” designation.
Can a patent agent draft a licensing agreement for a university TTO?
Generally no. Drafting and negotiating a licensing, assignment, or sponsored-research agreement is general legal work outside the scope of what registration as a patent agent authorizes; that work should go to a licensed attorney, whether or not that attorney is also a registered patent practitioner.
How is the registration exam different from a state bar exam?
They test entirely different bodies of law and are administered by entirely different bodies. A state bar exam (administered by a state’s own bar authority) tests general legal competence for that state’s licensed practice of law. The USPTO registration exam, administered by USPTO’s Office of Enrollment and Discipline, tests only USPTO procedure, patent statutes, and USPTO regulations, and only confers authority to practice specifically before the USPTO in patent matters — not to practice law generally.
Is the patent bar an open-book exam?
Effectively yes, though not in the way candidates expect. You may not bring anything into the room – no documents, no notes, no electronic devices – but the MPEP and the other reference materials the questions are drawn from are provided on the computer delivering the exam. The constraint is time, not recall: 100 questions across two three-hour sessions, with the searchable reference material available throughout.
How long does it take to go from applying to being registered?
Months rather than weeks. OED review of the application typically takes up to four weeks, the notice of admission then gives roughly 90 days to schedule and sit the exam, official results follow within about five business days, and the certificate of registration generally issues around three months after passing, once the 45-day public comment period on the applicant’s moral character and reputation has run.
How soon can you retake the patent bar after failing?
37 CFR 11.7(b)(1)(ii) requires a wait of 30 days after the date of the last examination. Reapplying means a fresh Form PTO-158 and another $118 application fee, but documents already filed with OED do not need to be resubmitted unless something has changed. A separate temporary waiver currently suspends the additional wait period and the five-attempt cap that 37 CFR 11.7(b)(2) would otherwise impose – check whether it is still in force before relying on it.
Can a non-US citizen sit the exam and practise before the USPTO?
Only U.S. citizens and lawful permanent residents can be registered, subject to a narrow reciprocity exception under 37 CFR 11.6(c) – the GRB names the Canadian Intellectual Property Office as presently the only recognised office. Other non-citizens residing in the United States may apply for limited recognition under 37 CFR 11.9(b) if they can document that immigration authorities have authorised them to be employed or trained specifically in preparing and prosecuting patent applications. Someone with limited recognition must disclose that status and may not describe themselves as registered.
What qualifies under Category B if my degree is not on the Category A list?
One of four coursework routes: 24 semester hours in physics; or 32 hours combining 8 hours of chemistry or physics (at least one with a lab) with 24 hours of biology, botany, microbiology or molecular biology; or 30 hours in chemistry; or 40 hours combining 8 hours of chemistry, physics or biology (at least one with a lab) with 32 hours of chemistry, physics, biology, botany, microbiology, molecular biology or engineering. Only courses for science or engineering majors count, only grades of C- or better are accepted, and quarter hours convert to semester hours by multiplying by two thirds. Confirm the current thresholds against the live General Requirements Bulletin before relying on them.
What is a design patent agent?
A practitioner registered under Category D, whose qualifying degree is in a design subject such as architecture, industrial design, graphic design, product design, applied arts, fine or studio arts, or art teacher education. Passing the same registration examination on that basis confers authority to practise before the USPTO in design patent matters only, not in utility patent prosecution.
Verified 23 August 2026 against the USPTO’s General Requirements Bulletin (issued August 2026) and the USPTO’s “Becoming a patent practitioner” guidance on uspto.gov, which carry the eligibility categories, exam format, fee schedule and registration process described above. Fees and the temporary attempt-limit waiver are subject to revision – confirm against the live GRB before acting on them.
