Battery Patents in Korea

Q: How long does a battery patent take in Korea?

In 2025, the average time from the examination request to the first result was 14.7 months for regular examination and 2.1 months for accelerated examination. Batteries have been covered by advanced-technology acceleration notices. Eligibility and application windows must be checked against the notice in force when the request is made.

Q: Can a BMS algorithm be patented?

It can, but a formula alone is usually insufficient. The claims should explain which sensor data is received, how it is processed and what is controlled—for example, estimating battery condition from voltage, current and temperature and adjusting charging current.

Q: Can we file before all experimental data is ready?

An invention claiming a numerical range should support the claimed effect within that range. One option is to file for the supported subject matter first and file a further application with additional data within one year, claiming priority where available. The initial scope depends on the disclosure.

Q: When should we decide on overseas filings?

To claim priority from the Korean filing, overseas applications or a PCT application generally need to be filed within 12 months. Discussing target countries and budget at the first filing helps keep the timetable manageable.

Battery inventions can depend on physical structures and numerical ranges, or on the sequence of data processing. Pack claims should explain component arrangements and connections; BMS claims should explain how sensor data becomes a state estimate and a control command.

How we can help

BMS and state estimation: SOC/SOH estimation, cell balancing and fault diagnosis
Charging and thermal control: Fast-charging profiles, temperature control and protection logic
Cells, modules and packs: Electrode assemblies, cooling, housings and connections
Manufacturing and inspection: Electrode-processing equipment, assembly systems and inspection methods

Your patent attorneys

Jung Jae-yeol — Managing Korean Patent Attorney

Education: Electrical, Electronic and Radio Engineering, Korea University
Qualifications: Passed the 53rd Korean Patent Attorney Examination; certified technology transaction specialist
Career: Managing Patent Attorney, Pine IP Firm (2024–present)
Lee & Mock (2021–2024)
Haean Patent & Law Firm (2021)
Yoon & Lee International Patent & Law Firm (2019–2020)
Experience and activities: Patent filing and prosecution in electrical engineering, electronics, communications, AI and software
Patent strategies for battery state estimation and management, financial AI and defense technologies

Jung Jae-yeol — View profile

Kang Min-ho — Managing Korean Patent Attorney

Education: Electrical and Electronic Engineering, Sungkyunkwan University
Qualifications: Passed the 53rd Korean Patent Attorney Examination
Career: Managing Patent Attorney, Pine IP Firm (2022–present)
Patent Attorney, Electronics Team, Jiwon IP Law Firm (2020–2022)
Patent Attorney, Electronics Team, Lee & Mock (2018–2020)
Patent Attorney, Wooin Patent & Law Firm (2017–2018)
Experience and activities: Patent filing and prosecution in electronics, electrical engineering, AI, software, UI/UX, blockchain and IoT
Competitor patent analysis, freedom-to-operate (FTO) and design-around review

Kang Min-ho — View profile

Representative experience

Patent applications for battery state estimation and management

Filing and prosecution

Battery and AI patent work for IT and defense companies

Corporate patent work

Fuel-cell vehicle bipolar-plate technology

Technology commercialization

Work on a hydrogen fuel-cell vehicle bipolar-plate project under KIAT’s cross-ministry technology commercialization program.

Procedure and timing in Korea

From application to grant

Consultation and invention reviewWe review your invention disclosure, drawings and experimental data to define what to protect.
Prior-art search and application draftingUsually two weeks to one monthWe search Korean and overseas patent literature, assess patentability and draft the specification and claims.
Filing and request for examinationRequest examination on filing or within three years of the filing dateWe file in Korea and request examination, with a request for accelerated examination where the requirements are met.
Examination and office-action response2025 averages to the first examination result: 14.7 months for regular examination; 2.1 months for accelerated examinationIf an office action issues, we prepare arguments and amendments within the notified response period, usually two months for domestic applicants. Extensions may be available.
GrantPay the registration fee within three months of receiving the decision to grantThe patent right takes effect upon registration after payment of the registration fee.

Related insights

Frequently asked questions

How long does a battery patent take in Korea?

Can a BMS algorithm be patented?

Can we file before all experimental data is ready?

When should we decide on overseas filings?

Request a consultation

Tell us about your technology, development stage and intended filing date.

info@pinepat.com
+82 52-713-5309
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