Intellectual Property & Certifications

Intellectual property & certifications

AI capabilities supported by patents, trademarks, and accredited certifications

35 Total registered IP rights As of December 2025 · 10 patents · 25 trademarks
12 Total pending applications As of December 2025 · 10 patents · 2 trademarks
3 Jurisdictions Korea · United States · Singapore

Patent portfolio by technology

Multimodal Translation — 3 registered · 6 pending

Our “hybrid translation system using a general-purpose neural network machine translator” is registered in both Korea and the United States, securing the core translation engine. Recent applications extend into multimodal media AI: context-based subtitle generation, video summarization from fused multimodal data, and webtoon image subtitle management.

AI Dataset — 2 registered · 1 pending

Registered patents cover the data-processing groundwork for model training, including per-user translation dictionary generation and the translation document management system. The know-how accumulated as an AI training-data program operator continues in a pending application on blockchain-based corpus data management.

SaaS & Workflow — 5 registered · 3 pending

Foundational patents behind the commercialization of translation services, such as the business process asset management method and encyclopedia-based translation service. Pending applications raise the completeness of the workflow: automated translation quoting, localized content delivery, and translator evaluation.

Intellectual property register

Registered and pending patents and selected trademarks as of December 2025. Headline figures cover the entire portfolio, including the additional trademarks listed below.

10 registered patents

Hybrid translation system using a general-purpose neural network machine translator AI · Korea 10-2260396 · May 2021
Hybrid translation system using a general-purpose neural network machine translator AI · United States US 11,983,506 · May 2024
Translation quality evaluation apparatus and method AI · Korea 10-2653880 · Mar 2024
Electronic document management system and method for per-user translation dictionaries Data · Korea 10-1884304 · Jul 2018
Translation document management system and method Data · Korea 10-1854714 · Apr 2018
Apparatus and method for translating using an encyclopedia SaaS · Korea · acquired 10-1498456 · Feb 2015
Electronic dictionary search apparatus and method for mixed Hangul–Hanja documents SaaS · Korea · acquired 10-1220709 · Jan 2013
Method for translating based on the location of a mobile terminal SaaS · Korea · acquired 10-0883120 · Feb 2009
Method for managing property of a business process SaaS · Korea · acquired 10-0874587 · Dec 2008
Method for serving an electronic dictionary in a portable terminal SaaS · Korea · acquired 10-0703383 · Mar 2007

10 pending patent applications

Context-based subtitle generation system with a predefined sentence-pattern database AI · Korea 10-2024-0199512 · Dec 2024
Video summary generation system and method based on multimodal data fusion AI · Korea 10-2024-0199526 · Dec 2024
Webtoon image and image-based subtitle management system using an MKV container AI · Korea 10-2024-0199594 · Dec 2024
Translation engine management apparatus and method for an MLOps environment AI · Korea 10-2024-0139108 · Oct 2024
Apparatus and method for generating per-character or translated subtitles for digital content AI · Korea 10-2024-0138558 · Oct 2024
Machine translation apparatus with multiple engines and a method of selecting among them AI · Korea 10-2024-0138583 · Oct 2024
Apparatus and method for automated translation quoting SaaS · Korea 10-2024-0139086 · Oct 2024
Apparatus and method for delivering localized content SaaS · Korea 10-2024-0139097 · Oct 2024
Machine translation apparatus with multiple engines and a method of evaluating translators SaaS · Korea 10-2024-0138609 · Oct 2024
Blockchain-based corpus data management method and apparatus Data · Korea 10-2024-0138635 · Oct 2024

Selected brand trademarks — 21 registrations

Selected brands account for 21 of the 25 registered trademarks. The remaining 4 registrations and 2 applications appear under additional trademarks below.

LETR Classes 9, 35, 41, 42 · 9 in Korea / 1 in Singapore (4 classes) 40-2366080 et al. · 2022 · 2023 · 2025
TWIGFARM Registered mark: twigfarm · Class 42 · 1 registration in Korea 40-1280747 · 2017
Languify · 랭귀파이 Classes 9, 41 · 4 in Korea 40-1622992 et al. · 2020
GCON · GCON STUDIO Classes 9, 41 and others · 3 in Korea 40-1280748 et al. · 2017 · 2021
말모이 (Malmoi) Classes 9, 38 · 2 in Korea 40-1929434 et al. · 2022
랭스마켓 (Langs Market) Class 9 · Korea 40-1208211 · 2016
Additional trademarks — 4 registrations · 2 applications
heybunny · 헤이버니 Classes 9, 41 · 4 in Korea 40-1720263 et al. · 2021
heybunny Classes 9, 41 · pending in the United States 99/056,531 · 99/056,534 · Feb 2025

Trademarks are grouped by brand; totals count rights by jurisdiction and registration number. Assigned patents include rights transferred from Samsung Electronics and SK Telecom. Pending applications may change following examination.

Accredited certifications behind our technical credibility

Product quality, information security, and R&D capability are all verified by third-party audits and tests. The full list, including awards, is on the company page.

View all certifications and awards on the company page →

Product quality & testing

GS Certification Grade 1 — LETR WORKS v2.8.5 Good Software quality certification TTA · No. 24-0352 · Jul 2024
GS Certification Grade 1 — GCon Studio v2.0 Good Software quality certification TTA · No. 18-0104 · Feb 2018
Cloud quality & performance test LETR API SaaS quality and performance test report TTA · CT-A-23-071 · Dec 2023
SaaS translator test SaaS-based hybrid translator test report TTA · BT-B-20-0056 · Jun 2020

Information security & privacy

ISO/IEC 27001:2013 Information security management system No. 23-G-0242 · to Oct 2026
ISO/IEC 27701:2019 Privacy information management system No. 23-N-0045 · to Oct 2026
ISO/IEC 27017:2015 Information security for cloud services No. 23-CI-0002 · to Oct 2026
ISO/IEC 27018:2019 PII protection in public clouds No. 23-CP-0002 · to Oct 2026

R&D & technology qualifications

Corporate R&D center Accredited by MSIT / KOITA No. 2016114509 · since Sep 2016
Venture enterprise (R&D type) Korea Venture Business Association 2 Apr 2026 – 1 Apr 2029
Specialized research business Contract research (engineering R&D) · MSIT No. 20233656 · to Feb 2029
Certificate of Technical Achievement (T3) Language translation & NLP solution technology · NICE D&B No. NDB-2021-01-035850 · May 2021

IP protection

Software copyright registration LETR WORKS v2.8.5 · Korea Copyright Commission No. C-2024-019468 · Jun 2024
Technology escrow — 2 deposits KO–EN machine translation · multimodal translator · KOFC Deposited 2021 · 2024

Protecting content assets through technology and operations

Security certifications, access controls, and backup procedures support protection of media assets and confidential data. Registered patents and GS Grade 1 certified products underpin our work with enterprise and public-sector customers.