Patent Translation Services: How to Choose a Supplier and Organise the Work with Your Patent Attorney
What should a company look for in a patent translation service? Look for translators who understand both the technology and the legal weight of the claims, a second qualified linguist who revises every text, terminology kept consistent across the whole patent family and a supplier that works to your attorney’s deadlines. DEMA Solutions provides patent translation services built on exactly that process.
Who this guide is for
This guide is for the people who carry a patent from the inventor’s notes to protection in several countries and who have to keep the translated versions in line with the original at every step. You may be an IP manager at a manufacturer of machinery or medical devices, responsible for a portfolio that grows a little every quarter. You may be an R&D manager who is asked to check a German or Italian version of a description you wrote in English. Or you may be a patent attorney, in a firm or in house, who needs a translation partner that delivers on time and does not create work for you at the review stage.
What follows concentrates on the translation itself: when it is needed, why it differs from other technical work, what moves the price and how to divide responsibilities. One point first: a translation supplier translates. Filing, legal strategy and representation before patent offices stay with your patent attorney or IP department.
When a patent needs translating
Over its life, a patent is translated at several moments, each with its own purpose and deadline.
Filings abroad on the basis of a priority application. A company that files first at home and then extends protection abroad within the priority year needs the application in the language of each office it approaches. For many manufacturers this is the first moment of real pressure, because the priority year has a fixed end and the decision on where to file is often taken late.
The claims at grant of a European patent. According to the EPO, before a European patent is granted the applicant is invited, under Rule 71(3) EPC, to file a translation of the claims in the two official languages of the EPO other than the language of the proceedings, within four months. A patent prosecuted in English therefore needs its claims in French and German, and a patent prosecuted in German needs them in English and French. The text is short, but it is the one that defines the protection, and the deadline arrives with the grant.
Validation in national states. After grant, a European patent takes effect in the states where it is validated, and some states require a translation. The London Agreement reduced this considerably. According to the EPO, Germany, France, the United Kingdom, Switzerland, Ireland, Belgium, Luxembourg, Liechtenstein and Monaco dispense entirely with the translation requirement, while other states that joined, such as the Netherlands, Denmark, Sweden or Finland, may ask only for a translation of the claims into one of their languages, provided the patent is available in the language they prescribe. Italy and Spain are not part of the agreement, and the EPO’s national law tables show that both still require a translation of the patent specification into their own language, in each case within three months of the publication of the mention of grant. For Spain the translation is filed with the national patent office, the OEPM, together with a copy of the drawings.
The Unitary Patent. According to the EPO, a request for unitary effect must, during a transitional period, be accompanied by a full translation of the specification: into English if the proceedings were in French or German, and into another official language of the EU if they were in English. Under the EU regulation that sets the rules, this translation has no legal effect and is for information only, and the transitional period ends at the latest twelve years after the regulation began to apply. Because the request has to be filed within a short time after grant, this translation often runs in parallel with validation translations for the states the Unitary Patent does not cover.
National and regional phase of a PCT application. According to WIPO, entry into the national phase must be completed, for the majority of PCT offices, before the end of the 30th month from the priority date, and it can include filing translations of the application. For a manufacturer entering several regions at once, this can mean the full text in several languages within the same few weeks.
Oppositions, litigation and licensing. These bring their own needs: the patent itself, the documents cited against it, technical evidence and correspondence, read by judges, opposing counsel and experts. Precision and traceability to the original matter as much as at filing.
Prior art and freedom to operate. Before filing or launching a product, engineers and attorneys need to understand patents written in languages they do not read. Here the goal is comprehension, and the approach can be lighter.
In each case the dates are set by law or procedure, not by the translator. Requirements also change and differ between offices, so the patent attorney handling the file should always confirm the current rules. A supplier that understands the sequence can help you plan, but it should never decide what the law requires.
What makes patent translation different
Patent translation is technical translation with legal consequences. Engineers read the description to understand the invention, while attorneys, examiners and courts read the claims to decide what is protected. The translated text has to work for both readers at once.
The claims carry the most weight. Every word in a claim either broadens or narrows the scope of protection. “Comprising” and “consisting of” are not interchangeable, a singular is not a plural, and an adjective moved from one noun to another can change what the claim covers. A translator who smooths a claim into more natural prose may produce a better sentence and a worse patent. In claims, the job is fidelity to structure and meaning, including deliberately broad or awkward wording that the drafter chose for a reason.
Consistency with the original is the second requirement. Translated patents are compared with the source by examiners, opponents and courts. Adding clarity that is not in the original, or leaving out a qualification that seems redundant, creates a gap between the versions that someone may later try to exploit. The translation should say what the original says, no more and no less.
Third, patents combine two registers. The description of an industrial valve or a surgical stapler uses the vocabulary of its engineering field, while the claims and the formal parts use the fixed phrasing of patent drafting. A technical patent translation needs a linguist who handles both: someone who knows what a “bushing” or a “trocar” is, and who also knows how claims are conventionally phrased in the target language.
Fourth, terminology has to hold across the whole family. The same component must have the same name in the priority filing, the European application, the national phase texts and any later divisional application. Variation that looks harmless in a single document becomes a problem when someone compares versions years later.
Finally, there are formal requirements. Reference numerals must match the drawings, claim numbering and dependencies must survive translation, and each office has its own rules on presentation.
Claims, description and drawings: how each part is handled
The claims are translated with the highest care and revised against the source term by term. Antecedent basis is checked, so that “a valve” introduced in claim 1 becomes “the valve” in later claims in the target language too. Dependencies between claims are verified, and every technical feature in the source claim is accounted for in the translation. Where a term in a claim could be read in two ways, the right step is to flag it for the attorney rather than to choose silently.
The description is longer and more varied: background, summary, detailed embodiments and often examples or test data. Here subject knowledge matters most, because the description explains the invention in engineering terms and supports each claim feature. Its terminology must match the claims, so both are best translated by the same linguist, or at least from the same approved term list.
The drawings usually contain little text, but what they contain matters. Reference numerals have to match the description exactly, and any labels, legends or flowchart text need translating and placing back into the figure. This is layout work as much as translation, and it is done most reliably by people who handle graphics files every day. Our desktop publishing services cover this step in house, so translated figures come back consistent with the text rather than as separate pieces to be assembled later.
Keeping a patent family consistent
Most manufacturers do not file one patent. They file families: a priority application, a European or PCT filing, national phase versions, continuations or divisional applications, and later improvement patents on the same product. The text overlaps heavily from one to the next, and the same terms recur for years.
Two resources keep that consistency under control. A translation memory stores every approved sentence with its translation, so when a divisional application repeats long passages of the parent, those passages are recognised and reused in the approved wording instead of being translated again with small variations. Our page on translation memory and alignment explains how the memory is built and how earlier translations done elsewhere can be aligned with their originals so they are not lost.
A termbase, or glossary, records the agreed translation of each key term, along with terms to avoid. For a patent family it is worth building one early, ideally with input from the inventor and the attorney, because the choice of a term in the first filing will be very hard to change later. The work involved is described on our page about terminology management and glossaries.
IP teams sometimes overlook a further benefit. The terms in your patents are often the terms in your manuals and service documentation, so when both share one termbase, an engineer, a customer and a court meet the same name for the same component. Manufacturers who already organise product content this way, as in our language solutions for the manufacturing industry, can fold patents into the same structure.
Machine translation and patents
Machine translation has a real but limited role in patent work.
Where it helps is comprehension. During a prior art search or a freedom to operate review, an engineer may need to scan many documents in languages they do not read just to decide which deserve attention. A machine draft can sort the relevant from the irrelevant, provided everyone treats it as a reading aid. When a document turns out to matter, the passages that will be relied on should be translated and revised by qualified linguists.
Where it must not replace a qualified translator and a reviser is anything that will be filed, cited or argued. Machine output reads fluently, which makes its errors harder to spot: a dropped negation, a singular turned into a plural, a “substantially” that disappears, or a term translated three different ways in the same claim set. In a manual these are errors; in a claim they may change the scope of protection. For filed texts, human translation with full revision remains the standard, and any machine assistance has to sit inside that process rather than replace it. Our article on how we use AI in practice describes where we draw that line across all technical documentation.
What drives patent translation costs
There is no single price for a patent, because patents vary enormously. Knowing what moves patent translation costs helps you budget and compare quotes from different providers of patent translation services on the same basis.
Length is the obvious factor, and the description usually accounts for most of it: long embodiments, many examples or extensive tables cost more than a short mechanical patent with a few figures. The number of claims matters too, because claims deserve the most careful revision.
The language pair and the technical field both play a part. Some combinations have fewer qualified patent linguists available, and highly specialised fields, such as certain chemical or medical technologies, narrow the pool further. Urgency has its own cost: a full PCT national phase translation requested a few days before the deadline needs more people working in parallel, and more coordination to keep their terminology aligned.
Reuse works in the other direction. When a translation memory already holds the parent application or earlier members of the family, the repeated passages do not have to be translated from scratch, which reduces both cost and time. This is one of the strongest reasons to keep patent work with one supplier and one memory over the years. Finally, drawings that need text replaced in graphics files, or deliveries in a specific layout required by an office, add desktop publishing work that should be quoted openly rather than discovered later.
When you request a quote, the most useful thing you can send is the actual text in an editable format, together with the target languages, the deadline and any earlier translations from the same family. Our guide on what to send a translation supplier for an accurate quote was written for manuals, but the same principles apply to patents.
How to work with your patent attorney
A patent translation project goes best when everyone knows their role. The attorney decides what must be filed, where and by when, and files it. The supplier translates, revises and delivers in the agreed form. The inventor or an R&D engineer is often the best person to confirm technical terms. Agreeing this early avoids the usual problems: a file the attorney cannot use, a term changed late by someone who was not asked, or a deadline nobody shared.
Send editable source documents rather than scanned PDFs wherever possible, the drawings as separate files, and any existing glossary or earlier translations from the same family.
Give the supplier the real deadline and the filing deadline separately. A translation that arrives the day the attorney must file leaves no room for the attorney’s own review. Building in time for that review, and for the inventor to check key terms in the claims, is the simplest way to protect the quality of what is filed.
Finally, agree how questions are handled. A good translator will find ambiguities in the source, such as a term used in two senses or a reference numeral that does not match the drawing. These should go to the attorney as queries, not be resolved quietly in the translation.
Questions to ask a provider of patent translation services
When you compare a patent translation company with others, start by asking who will translate and who will revise your patent, and what subject knowledge they bring to your field. A mechanical patent and a medical device patent need different expertise, and you should hear how linguists are matched to the technology, not only to the language pair.
Next, ask how claims are handled differently from the description. A supplier with real patent experience will describe term by term revision against the source, checks on antecedent basis and numbering, and a clear route for queries to your attorney. Ask how terminology is kept consistent across a family over several years, and who owns the translation memory and glossary built from your patents, so that your approved wording stays with you whatever happens to the relationship.
Ask about confidentiality. Unpublished applications are among the most sensitive documents a company holds, so you should know how files are exchanged and stored, who has access, and what commitments the linguists have signed. Ask how drawings and figures are handled, and whether that work is done in house or passed on to someone else.
Finally, ask about certified patent translation. Some offices or courts may require a translation to be certified or sworn, others do not. A reliable supplier will explain what it can provide where required and will not promise a certification that your attorney has not asked for. Our broader guide to choosing a technical translation company adds further questions for a structured comparison.
How DEMA Solutions handles patent translation
We support legal departments, law firms, patent professionals and corporate teams with specialist legal translation, sworn or certified workflows where required, confidentiality and document specific review. Patents are one of the document types we handle, and our page on legal and sworn translations describes that service as a whole. Our core clients are manufacturers of machinery, industrial equipment and medical devices, so patents in those fields sit close to the technical documentation we translate every day. Law firms and in house legal teams can find more on how we work with them on our page of language solutions for the legal industry.
Every project follows our ISO 17100 certified process, which means a second qualified linguist revises each translation before it is delivered. We keep a translation memory and a termbase for each client, so terminology agreed for one filing carries through the rest of the family. Our in house DTP team handles figures and drawings, and our teams in Italy, Serbia and Spain work together on projects that involve several languages at once.
We are clear about what we do not do. We translate; we do not file patents, give legal advice or represent clients before patent offices. Your patent attorney or IP department remains responsible for the filing, and we organise our work to fit their deadlines and review. If you want a broader view before you start, our free patent translation report sets out the main points in a format you can share with your team.
Where TUBE fits
For manufacturers whose patent families keep growing, TUBE is the solution that keeps each new filing tied to the wording you have already approved. Your glossary and translation memory control any machine translation used in the process, and every approved translation goes into a memory that you own.
Frequently asked questions
Translators with knowledge of the technical field and of how claims are drafted, revision of every text by a second qualified linguist, consistent terminology across the whole patent family, careful handling of drawings and reference numerals, clear confidentiality arrangements and a way of working that fits the patent attorney's deadlines and review.
It depends on the office. Some national offices accept a translation without certification, while others, or courts in later proceedings, may set specific formal requirements. Your patent attorney will confirm what the office concerned requires at the time of filing.
It depends on the length of the description, the number of claims, the language pair, the technical field and how much can be reused from earlier translations of the same family. Time for revision and for the attorney's own review should also be planned. Sharing the filing deadline early gives the most options.
The claims, because they define the scope of protection. Their wording, structure, numbering and dependencies must match the original exactly, and any ambiguity should be raised with the attorney rather than resolved in the translation.
It can help engineers and attorneys understand foreign prior art or screen documents during a freedom to operate review. For anything that will be filed or used in proceedings, a qualified translator and a second reviser should produce and check the text.
Because the versions of a patent are compared with each other by examiners, opponents and courts. If the same component has different names in the parent, a divisional application and the national phase texts, the differences can raise questions about what is covered. A translation memory and an agreed termbase prevent that.
No. The patent attorney or the company's IP department handles the filing and any communication with the patent office. The translation supplier delivers the translated texts in the agreed format and in time for the attorney's review.
Send us one patent and your filing plan
The simplest way to see how we would handle your patents is to start with one. Send us a patent or application with the target languages and the filing deadline, together with any earlier translations from the same family, and we will show you how we would treat the claims, the terminology and the drawings. If you prefer to read first, download our free patent report.
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