I studied electrochemistry inside a chemical engineering degree. Does that count?

Yes, as Chemical Engineering, which is a Category A subject in its own right. OED looks at the degree title on the transcript, not the concentration.

Which USPTO Technology Center examines battery and fuel cell patents?

Technology Center 1700 (Chemical and Materials Engineering). Its roster lists a group for fuel cells, batteries and solar cells, and electrochemistry within Group 1790.

Patent bar eligibility by degree

Electrochemical Engineering and the Patent Bar

Electrochemical Engineering is a Category A subject in the USPTO General Requirements Bulletin. A bachelor's, master's or Ph.D. in electrochemical engineering qualifies you to apply for the patent bar.

Check your eligibility Full eligibility guide

At a glance

USPTO category: Category A
Listed subject: Electrochemical Engineering
Degree levels: Bachelor's, master's or Ph.D.
Main Technology Centers: TC 1700

Checked against the August 2026 bulletin

Eligibility

Does an Electrochemical Engineering degree qualify?

Yes. The USPTO General Requirements Bulletin (August 2026 edition) lists Electrochemical Engineering in Category A, the degree-based route to the registration exam. An applicant with a bachelor's, master's or Doctor of Philosophy degree in a listed subject from an accredited U.S. college or university, or the foreign equivalent, meets the scientific and technical requirement without a course-by-course review.

Few universities award a degree with this exact title. Most people who work in electrochemistry graduate in chemical engineering, chemistry or materials engineering, all of which are listed separately. OED reviews the degree title on your transcript, not a concentration or thesis topic within it.

Your OED application

Exactly what to submit

An official transcript from the college or university that shows the degree was awarded. A transcript issued to you is accepted if it carries the school's stamp or seal.
Not a diploma or a letter. A diploma, a copy of a transcript or a registrar's letter naming your degree does not meet the requirement.
Course descriptions if the title isn't an exact match. If your degree title differs from the listed subject, OED checks equivalence; the OED FAQ suggests sending course descriptions with the first application to avoid delay.
Foreign degrees: objective evidence of U.S. equivalence, such as an evaluation from a foreign-credential evaluation service, alongside the transcript.

The rest of the application (forms, fees and the moral-character questions) is covered step by step in the OED application guide.

Practice

Patent work for electrochemical engineering graduates

Registered practitioners usually draft and prosecute applications in the technology they trained in. In this field that means work such as:

Technology area	Example inventions
Batteries	Lithium-ion electrolyte additives, solid-state electrolytes, separators.
Fuel cells and electrolyzers	Membrane electrode assemblies, catalysts for water electrolysis.
Electroplating and surface finishing	Plating bath chemistries, anodizing processes.
Corrosion protection	Cathodic protection systems, corrosion-inhibiting coatings.
Electrochemical sensors	Glucose test strips, gas sensors.

USPTO

Which Technology Centers examine this work

The USPTO routes each application to one of its Technology Centers by its classification. For electrochemical engineering subject matter, these are the ones you will deal with most:

Technology Center	Why it applies
TC 1700 Chemical and Materials Engineering	Its roster lists a group for fuel cells, batteries and solar cells, and electrochemistry within Group 1790.

Routing follows each application's classification, so a single application can land outside these centers.

Patent law

New uses of known materials

Electrochemical inventions often put a known material in a new role, such as a known salt used as an electrolyte additive. The new use can be claimed as a process (35 U.S.C. 100(b)), but a claim to the composition itself runs into inherent anticipation if the prior art already discloses it (MPEP 2112.01 and 2112.02).

The registration exam itself tests patent law and USPTO procedure from the MPEP, not your technical field. See the patent bar exam overview for format and scoring.

Other routes

If your degree title differs

Category A is matched on the subject your transcript names. Titles close to electrochemical engineering are handled like this:

Chemical Engineering with an electrochemistry concentration: Qualifies as Chemical Engineering, which is listed in its own right.
Ph.D. in Chemistry (electrochemistry research): Reviewed against the General Chemistry listing. See the Chemistry page.
Energy Engineering or Battery Technology: Not on the Category A list. OED decides equivalence, or Category B applies.

If you don't qualify under Category A, Category B counts science and engineering coursework (courses for science or engineering majors, grade C- or better):

Option 1: 24 semester hours in physics (physics courses for physics majors).
Option 2: 32 semester hours: 8 in chemistry or physics plus 24 in biology, botany, microbiology or molecular biology.
Option 3: 30 semester hours in chemistry (chemistry courses for chemistry majors).
Option 4: 40 semester hours: 8 in chemistry or physics plus 32 in other listed science and engineering subjects.

Category C is for applicants with a bachelor's degree who pass the Fundamentals of Engineering (FE) exam. Run your transcript through Do I Qualify? for a quick check, then read the full eligibility guide.

FAQ