Table of Contents
A patent drawing Madrid brief sits in the one Spanish city where the granting office is local. The OEPM is headquartered here, it examines every application substantively since Law 24/2015, and it searches in Spanish as a PCT International Searching Authority in its own right. Spain is also an EPC member that never joined the Unified Patent Court, so the figures in your Spanish file are the ones a Madrid commercial judge will eventually read. Here is what that means for the drawings.
Why patent drawing Madrid work answers to the OEPM, the Mercantile Courts and Alicante
Madrid is the one Spanish city where the national patent authority is local. The Oficina Española de Patentes y Marcas — the OEPM — is headquartered here, and it is the office that will examine your application, raise any formalities objection against your figures, and grant the Spanish patent or utility model.
That makes a patent drawing Madrid brief different from a brief for Barcelona or Valencia in one practical respect: the formalities examiner and the applicant are in the same city and the same timezone, and a defective drawing sheet can usually be corrected inside a single communication cycle rather than across a two-week courier loop.
Three institutions matter, and they are in three different places. The OEPM in Madrid grants patents and utility models. The Mercantile Courts of Madrid enforce them. And EU designs and EU trade marks are not Madrid business at all — those go to the EUIPO in Alicante, which is a distinction that trips up a surprising number of inbound instructions.
- OEPM, Madrid — grants Spanish patents and utility models; also a PCT Receiving Office, International Searching Authority and International Preliminary Examining Authority
- Juzgados de lo Mercantil de Madrid — commercial courts numbers 6 to 11 hold specialised jurisdiction over patents, designs and trade marks
- EUIPO, Alicante — EU registered designs and EU trade marks, not the OEPM and not the EPO
The OEPM searches in Spanish — and that changes the drawing brief
Here is the fact that most distinguishes Madrid from any other European filing centre. The OEPM is not merely a national office: it acts as a PCT Receiving Office and as an International Searching Authority and International Preliminary Examining Authority, and it carries out those functions in Spanish.
A Madrid applicant can therefore file an international application in Spanish, have the international search conducted in Spanish, and deal with the whole international phase without an English translation at the front end. For Spanish-speaking applicants and for filings aimed at Latin America, that is a genuine cost and timing advantage over routing everything through the EPO as ISA.
The drawing consequence follows directly. Because the procedure runs in Spanish, any word that survives in a figure has to work in Spanish. PCT Rule 11.11 already restricts text matter in drawings to a single word or words where absolutely indispensable — the classic examples being “water”, “steam”, “open” and “section on AB”. What is left after that restriction still needs a Spanish rendering for the national file.
In practice this is where US-drafted figure sets cost money. A flowchart with a full English sentence in every box fails PCT Rule 11.11 on its own terms, and then fails again as a translation problem. The fix is the same in both directions: strip descriptive text out of the figures, put reference numerals in the boxes, and carry the wording in the description where it can be translated once and properly.
We draft patent drawing Madrid sets so the figures are language-neutral from the start. A numeral-only figure set needs no redrawing when the case moves between Spanish, English and the international phase.
Spain examines every patent application — your figures get read, not skimmed
Spain used to be a light-touch jurisdiction. It is not any more, and the change is recent enough that older guidance is still circulating. Under Law 24/2015 on Patents, in force since 1 April 2017 and implemented by Royal Decree 316/2017, Spain operates a single granting procedure with substantive examination for every patent application. The optional-examination regime that preceded it is gone.
This matters for drawings more than it first appears. In a system where applications were granted without substantive examination, a mediocre figure set carried little immediate risk — the defect surfaced years later in litigation, if at all. In a mandatory-examination system, the examiner reads the figures against the claims at the outset, and an inconsistency between a reference sign in Figure 3 and the element named in the description becomes an objection on the file.
The three findings we see most often on Spanish national files are reference signs that appear in the drawings but never in the description, sectional hatching dense enough to obscure the leading lines it crosses, and figures carried over from a US provisional at a scale that stops being legible once reproduced at A4.
None of these is difficult to prevent. All of them cost an office-action cycle when they reach an OEPM examiner who is now obliged to look.
Spain is in the EPC but not the UPC — and that is an enforcement fact
Spain is a member of the European Patent Convention, so a European patent can be validated here and will take effect as a Spanish national right. Spain is not a participant in the Unified Patent Court, and never signed the UPC Agreement.
The consequence is concrete: a European patent in force in Spain is enforced nationally, before Spanish judges, under Spanish procedure. It cannot be litigated at the UPC and it cannot be revoked by a UPC central attack. For a portfolio owner who has opted European patents into the unitary system elsewhere, Spain remains a separate, parallel enforcement track that has to be resourced on its own terms.
Drawings are part of that resourcing. A Spanish infringement action turns on the Spanish-language file as granted, and the figures in it are the ones a Madrid judge and a court-appointed expert will work from. There is one further wrinkle worth knowing: since 1 October 2025 the EPO accepts drawings filed electronically in colour or greyscale, but the PCT has not changed and still requires black lines without colorings under Rule 11.13(a). A figure set that relies on colour to carry information can arrive in Spain already degraded, depending on the route it took.
Our rule for Spanish filings is that the figures must be complete and unambiguous in black and white. Colour, where an office accepts it, is an enhancement layer and never the layer carrying the disclosure.
Where a Madrid patent dispute is actually heard
Patent cases in Spain go to the commercial courts — the Juzgados de lo Mercantil — and only to those that hold specialised jurisdiction. The General Council of the Judiciary assigned specialised industrial-property jurisdiction to the commercial courts of Barcelona, Madrid, Valencia, Bilbao, Las Palmas, La Coruña and Granada.
In Madrid, commercial courts numbers 6, 7, 8, 9, 10 and 11 hold exclusive jurisdiction over patents, designs and trade marks. Madrid’s specialisation was completed in 2017, following Catalonia. Appeals run to the Audiencia Provincial de Madrid, whose specialised commercial section hears them.
It is worth being honest about where patent cases actually land. Barcelona’s commercial courts numbers 1, 4 and 5 attract the larger share of Spanish patent infringement filings, on a reputation for speed and patent-specific experience. Madrid’s advantage is different: it is where most Spanish corporate defendants are domiciled, which often fixes venue, and it is where preliminary and precautionary measures against a Madrid-headquartered respondent are sought.
Either way, a Spanish judge is reading a Spanish-language file. The figures need to be self-explanatory to a reader who is not a specialist in your technology — which is a drafting standard, not a formality one.
What Madrid actually files, and the figures each sector needs
Madrid’s filing profile is corporate and institutional rather than light-industrial, and a drawing set that suits a Basque machine-tool application is the wrong shape for most of it.
Telecoms and software. Madrid is Spain’s telecoms capital, and the filings that follow are network architecture, signalling and data-handling inventions. These are block-diagram and sequence-diagram cases, and they are precisely the ones that collide with PCT Rule 11.11. Numerals in the boxes, prose in the description.
Energy and utilities. The large Spanish electricity, gas and oil groups are headquartered here, and grid equipment, metering, storage and renewable-integration filings come with process schematics and P&ID-derived figures that have to be redrawn to patent standard rather than exported from engineering software.
Pharma and life sciences. Pharmaceutical corporate and regulatory activity concentrates in Madrid, as does the Spanish National Research Council, a substantial institutional filer. These cases bring assay output, chromatograms and histology — the subject matter where the colour question and the photograph question both arise, and where a greyscale-legible version has to exist regardless.
Aerospace and defence. The Getafe and Madrid-region aerospace cluster generates structural and systems inventions: exploded assemblies, sectional views through composite layups, and installation figures that need consistent numbering across a long figure sequence.
Banking and fintech. Spain’s largest banking groups are Madrid-based, and their filings are method and system claims with architecture diagrams — again, numeral-driven figures are the only version that travels.
- Telecoms & software — block, sequence and state diagrams, numerals only
- Energy & utilities — process schematics redrawn to patent line standard
- Pharma & life sciences — greyscale-legible assay and histology figures
- Aerospace & defence — exploded assemblies and composite sectional views
- Banking & fintech — system architecture figures for method claims
Utility models: the ten-year route Madrid SMEs use
Spain retains the utility model — the modelo de utilidad — which runs for ten years from filing and protects devices and products rather than processes. It is a route Spanish SMEs use heavily, and it is cheaper and faster to obtain than a patent.
Because the protected subject matter is a device or product, a utility model is almost always carried by its drawings. The figures are not supporting material; they are the disclosure. A utility model filed with a thin figure set is a weak right, and because the term is only ten years there is no long runway in which to fix it.
Our advice to Madrid SMEs choosing this route is to over-invest in views relative to what a patent would need: more sectional views, more detail callouts, and an exploded assembly wherever the invention is in how parts fit together. The marginal cost of an extra figure is small against a ten-year right that stands or falls on what the figures show.
How we deliver patent drawing Madrid sets
Every patent drawing Madrid set we deliver is drafted to the strictest standard that could apply to the case, then relaxed per jurisdiction — never the other way round, because adapting a loose set upward means redrawing it.
- Drafted on A4, so nothing needs rescaling for the OEPM or the EPO
- Solid black line work that is complete and legible with no colour at all
- Compliant as filed under PCT Rule 11.13(a), so the international route stays open
- Reference characters at or above 0.32 cm, clear of hatching and leading lines
- Language-neutral figures — numerals in the drawings, wording in the description
- Every reference sign reconciled against the description before the set is released
- Colour or greyscale supplied as a separate overlay where the receiving office accepts it
Send us a CAD export, an engineering schematic, an inventor sketch, a US figure set you need converted for a Spanish filing, or an OEPM formalities communication you need answered. We will tell you what the figures need before you commit to a filing date.
IP Landscape & Resources in Madrid
Key intellectual-property authorities, statutes and venues relevant to a Madrid filing:
- Spanish Patent and Trademark Office (OEPM) — headquartered in Madrid; grants Spanish patents and utility models under Law 24/2015 and acts as a PCT Receiving Office, International Searching Authority and International Preliminary Examining Authority in Spanish
- Law 24/2015 on Patents (official text) — the statute that introduced a single granting procedure with mandatory substantive examination from 1 April 2017
- OEPM patent examination guidelines — the examiners' working guidelines under Law 24/2015, including the formal requirements applied to drawings
- EUIPO (Alicante) — administers EU registered designs and EU trade marks — not the OEPM and not the EPO
- WIPO — PCT Rule 11 — the physical requirements for international application drawings, including Rule 11.13(a) on black lines without colorings and Rule 11.11 on text matter
Request a Patent Drawing Quote in Madrid
Request a Patent Drawing Quote in Madrid
Send us a CAD export, an engineering schematic, an inventor sketch, a US figure set that needs converting for the OEPM, or a formalities communication you need answered. We will tell you what the figures need before you commit to a filing date.
Explore related PerspireIP services: Patent Drawing services · our Spain IP services hub · patent drawing work in Barcelona · patent invalidation in Madrid · patent drawing work in Milan.
Frequently Asked Questions
Where do I file a Spanish national patent application from Madrid?
With the Spanish Patent and Trademark Office (OEPM), which is headquartered in Madrid. The OEPM grants both Spanish patents and utility models, and it is also a PCT Receiving Office, so an international application can be filed there in Spanish.
Does the OEPM examine Spanish patent applications substantively?
Yes. Law 24/2015, in force since 1 April 2017 and implemented by Royal Decree 316/2017, replaced the old optional-examination system with a single granting procedure that includes substantive examination for every patent application. Your figures are read against the claims, not just checked for format.
Can a European patent covering Spain be litigated at the Unified Patent Court?
No. Spain is an EPC member but is not a UPC participant and never signed the UPC Agreement. A European patent validated in Spain is enforced nationally before the specialised Spanish commercial courts, and it cannot be revoked by a UPC central attack.
Which Madrid court would hear a patent dispute?
The Juzgados de lo Mercantil of Madrid numbers 6 to 11, which hold specialised exclusive jurisdiction over patents, designs and trade marks. Appeals go to the Audiencia Provincial de Madrid and its specialised commercial section. Barcelona’s commercial courts 1, 4 and 5 attract a larger share of Spanish patent infringement filings.
Do the words in my figures have to be in Spanish?
The national procedure runs in Spanish, so any text that remains in a figure needs a Spanish rendering. PCT Rule 11.11 already limits text in drawings to a single word or words where absolutely indispensable, so the practical answer is to remove descriptive text altogether, use reference numerals in the figures, and carry the wording in the description.
Can I file colour patent drawings for a Spanish filing?
Treat black and white as the requirement. Since 1 October 2025 the EPO accepts drawings filed electronically in colour or greyscale, but PCT Rule 11.13(a) still requires black lines without colorings, so a colour-dependent figure set can be degraded by the international route before it reaches Spain. Supply colour as an overlay, never as the layer carrying the disclosure.
Is a Spanish utility model worth filing for a device?
Often yes. The modelo de utilidad runs ten years from filing and covers devices and products rather than processes, and it is cheaper and faster than a patent. Because the protected subject matter is physical, the drawings carry the right, so a utility model deserves more views than a patent on the same device would need.