IPRATE
HC

Helena Castro

IPRATE Top RatedTOP RATED

Barcelos, Portugal

Helena Castro is a trademark firm in Barcelos, Portugal, Top Rated for national trademark work on the cumulative record, one of 9,268 firms filing in Portugal, strongest in Clothing, Advertising and Fabrics, acting for CLAUSULAS ACESSIVEIS LDA, MARIBAT AÇO, UNIPESSOAL LDA and ANA MARIA FERNANDES MARTINS.

Next step: Counsel lookup·Commissioned analysis

Selected from 9,268 firms filing in Portugal

Rated 17 October 2026 · official records counted to 31 January 2026. Scoring counts filings from 1 May 2004 onward. Why.

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Confidence

High Confidence. The published tier reflects the selected country, vertical, track, and time window.

Vertical
Track
Window

Performance

Trademarks · National · Cumulative (20y)

Rating

IPRATE Top RatedTOP RATEDHigh Confidence

Archetype

Full-Service Generalist

Distinct Clients

14

Success Rate

100.0%

VolumeSuccessSpeedDurabilityRenewalsDomestic
Volume100
Success65
Speed69
Durability59
Renewals72
Domestic63

Practice profile

Top classes

Clothing(18%) · Nice 25Advertising(18%) · Nice 35Fabrics(10%) · Nice 24

Top clients

  1. CLAUSULAS ACESSIVEIS LDA
  2. MARIBAT AÇO, UNIPESSOAL LDA
  3. ANA MARIA FERNANDES MARTINS
  4. ROGÉRIO BARBOSA, UNIPESSOAL LDA.
  5. JULIANA BATISTA DOS REIS