Patent Translation That
Reflects Technology, Claim Scope, and Practical Use


Strands International Co., Ltd. provides patent translation services mainly between English and Japanese.
We handle various types of intellectual property-related documents, including patent specifications, claims, abstracts, text in drawings, Office Actions, written opinions, amendments, and responses.

In patent translation, it is not enough for the translation to read naturally in English or Japanese.
It is also necessary to consider the structure of the claims, the relationship between the claims and the specification, consistency with the drawings, terminology consistency, technical accuracy, and possible effects on the scope of rights.

We provide translations that take these practical aspects of patent work into account.
Our translations are prepared with an awareness that patent documents are not only technical documents, but also documents used in prosecution, rights acquisition, and rights enforcement.

We Can Assist With the Following Needs

Terminology and expressions differ between previously translated portions and newly translated portions.

You need a translation that reflects the correspondence among the claims, specification, and drawings.

You need a translation that treats the document not only as a technical document, but also as a legal document that may affect the scope of rights.

You need translation of Office Action-related documents, such as Office Actions, written opinions, amendments, or responses.

You want to use CAT tools or existing translations while maintaining consistency in terminology and expressions.

You want to entrust technically demanding documents in fields such as chemistry, biotechnology, machinery, and electrical engineering to a translator with relevant technical understanding.

Supported Documents

We handle various types of intellectual property-related documents, from patent applications to Office Action responses and technical explanatory materials.

  • Patent specifications
  • Text in drawings
  • Amendments
  • Technical explanatory materials
  • Claims
  • Office Actions
  • Responses
  • Other intellectual property and technical documents
  • Abstracts
  • Written opinions
  • PCT-related documents

Supported Language Pairs

We mainly provide English–Japanese and Japanese–English patent translation services.
We can also handle Chinese-related translation projects in cooperation with trusted partner translators.

  • English to Japanese
  • Japanese to Chinese
  • Japanese to English
  • English to Chinese
  • Chinese to Japanese
  • Chinese to English


For Chinese-related projects, we will confirm the technical field, volume, deadline, and cooperation structure with partner translators before accepting the project.

Technical Fields

Our main technical fields include:

  • Chemistry
  • Materials
  • Electrical engineering
  • Interdisciplinary fields involving the above areas
  • Biotechnology
  • Machinery
  • IT and telecommunications
  • Pharmaceuticals
  • Semiconductors
  • Medical devices

In particular, we carefully handle documents that require technical understanding and accurate expression, including chemical names, examples, claims, measurement conditions, substituents, numerical ranges, and related terminology.

Services Provided

We provide not only translation, but also review and drawing-related translation services.

  • Translation
  • Terminology and expression consistency checks
  • Translation and review using CAT tools
  • Review
  • Translation of text in drawings
  • Preparation of translated drawings
  • Checking of existing translations or machine-translated documents

MTPE services are considered on a case-by-case basis after confirming the source text, the quality of the machine translation, the scope of work, the deadline, and the fee conditions.

Supported Tools

We support the following CAT tools and translation support environments:

  • memoQ
  • Phrase
  • Trados
  • Xbench
  • XTM

When translation memories, term bases, glossaries, or style guides are available, we can take them into account in translation and review work.

What We Emphasize in Patent Translation

1. Consistency Among Claims, Specification, and Drawings

In patent documents, the claims, specification, and drawings are closely related.
Rather than translating sentence by sentence in isolation, we check the correspondence among elements, terminology consistency, and the flow of the description.

2. Attention to Both Technical Content and Claim Scope

Patent translation requires not only technical accuracy, but also careful attention to expressions that may affect the scope of rights.
We aim to produce translations that accurately reflect the technical content of the source text and convey the meaning of the patent document without excess or deficiency.

3. Readability as Documents Used in Practice

Application documents, Office Action-related documents, and technical explanatory materials are used in different practical contexts.
We prepare translations with consideration for the purpose of the document and its intended readers, so that the translated text can be reviewed and used effectively in practice.

4. Direct Involvement by the Representative

The representative is consistently involved in reviewing project details, quality control, deadline management, and client communication.
We handle each project responsibly while understanding the purpose of the translation, the technical content, and the client’s specific requirements.