MJ
Mário João de Sá E Melo de Castro Marques
Porto, Portugal
Mário João de Sá E Melo de Castro Marques is a trademark firm in Porto, Portugal, Rated for EU trademark work on the cumulative record, one of 1,821 firms filing in Portugal, strongest in Clothing, Furniture and Advertising, acting for Planitoi, Importação e Exportação, S.A., ADD 55 SOLUTIONS LLC and J.MOREIRA DA SILVA E FILHOS, S.A..
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Selected from 1,821 firms filing in Portugal
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IPRATE.EURated
TRADEMARKS · 2026
Confidence
High Confidence. The published tier reflects the selected country, vertical, track, and time window.
Vertical
Track
Window
Performance
Trademarks · EU · Cumulative (20y)Rating
High Confidence
Distinct Clients
32
Success Rate
96.3%
Volume100
Success72
Speed34
Durability47
Renewals72
Domestic24
Practice profile
Top classes
Clothing(23%) · Nice 25Furniture(7%) · Nice 20Advertising(7%) · Nice 35
Top clients
- Planitoi, Importação e Exportação, S.A.
- ADD 55 SOLUTIONS LLC
- J.MOREIRA DA SILVA E FILHOS, S.A.
- PROPET, S.A.
- International Public Relations Network, aisbl