| Company Name [desc] | Country |
|---|---|
| Ona Therapeutics | Spain |
| OmniSpirant Limited | Ireland |
| Omnicin Therapeutics BV | Netherlands |
| Omicspathway S.L. | Spain |
| Omet Pharma AB | Sweden |
| Omeros Ireland Limited | Ireland |
| OMEICOS Therapeutics GmbH | Germany |
| Oloker Therapeutics srl | Italy |
| Olikla s.r.o. | Czech Republic |
| Olavide Neuron STX S.L. | Spain |
| OGD2 Pharma | France |
| Odyssey Therapeutics GmbH | Germany |
| Odimma Therapeutics | France |
| ODDIFACT | France |
| Oculis ehf. | Iceland |
| Ocugen Limited | Ireland |
| OcciCal Therapeutics | France |
| Occentis SAS | France |
| OC Vigilance SL | Spain |
| Oblita Therapeutics | Belgium |
| OBA-Pharma ApS | Denmark |
| O11 biomedical GmbH | Germany |
| O.S.K. LEDPHARM LTD | Cyprus |
| Nykode Therapeutics ASA | Norway |
| NWPharmaTech GmbH | Austria |
| Nuvation Bio Ireland Limited | Ireland |
| NuLife B.V. | Netherlands |
| NuBiopeutics Ireland Limited | Ireland |
| Novumgen Limited | Ireland |
| Novimed S.A. | Greece |
| Noventis s.r.o. | Czech Republic |
| Noventia Pharma Srl | Italy |
| NOVALIE Pharma BV | Netherlands |
| Novadip Biosciences | Belgium |
| NovaCurie GmbH | Germany |
| NovaBiotics Limited (Ireland) | Ireland |
| Nova Nexus Pharmaceutical B.V. | Netherlands |
| Nouscom SRL | Italy |
| NorthSea Therapeutics B.V. | Netherlands |
| Norma Hellas s.a. | Greece |
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