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Representative before the EPO

Employment test 51 - 200 employees
Company dna maiwald patentanwalts gmbh
operating since 1995
Headquarter in Munich and 4 offices
active in Legal Services and IP Consulting

We have observed 37 EP applications Derk Vos has served for within the last five+ years. (We consider all applications which have an EP A1 publication dated after January 18, 2013). Please note, that we only count EP applications, in which the name of the patent attorney is explicitly mentioned as representative. These EP applications are:

EP11811125

PHOSPHORUS-SUBSTITUTED QUINOXALINE-TYPE PIPERIDINE COMPOUNDS AND USES THEREOF

IPC classification:
A61K 31/498, A61P 3/02, A61P 23/00, A61P 25/00, A61P 25/16, A61P 25/24, C07D 401/04, C07D 401/14
Applicant:
Purdue Pharma L.P.
Agent:
Derk Vos, Maiwald Patentanwalts GmbH
Status:
PATENT GRANTED
EP12735333

TRPV1 ANTAGONISTS INCLUDING DIHYDROXY SUBSTITUENT AND USES THEREOF

IPC classification:
A61K 31/428, A61P 1/04, A61P 13/00, A61P 19/02, A61P 25/02, A61P 25/04, A61P 29/00, C07D 417/12, C07D 417/14
Applicant:
Shionogi & Co. Limited (Shionogi Seiyaku Kabushiki-gaisha)
Applicant:
Purdue Pharma L.P.
Agent:
Derk Vos, Maiwald Patentanwalts GmbH
Status:
PATENT GRANTED
EP12770217

PYRIMIDINES AS SODIUM CHANNEL BLOCKERS

IPC classification:
A61K 31/4418, A61P 25/08, C07D 233/90, C07D 401/12, C07D 401/14, C07D 403/04, C07D 403/12, C07D 405/12, C07D 405/14
Applicant:
Purdue Pharma L.P.
Agent:
Derk Vos, Maiwald Patentanwalts GmbH
Status:
GRANT OF PATENT INTENDED
EP13158655

Process for the enantioselective preparation of 3-hydroxyglutaric acid monoesters and their use

IPC classification:
C12N 9/18, C12N 9/48, C12P 7/42, C12P 41/00
Applicant:
Sandoz AG
Applicant:
Universit├Ąt Bielefeld
Agent:
Derk Vos, Maiwald Patentanwalts GmbH
Status:
APPLICATION DEEMED TO BE WITHDRAWN
EP12813964

AZETIDINE-SUBSTITUTED QUINOXALINE-TYPE PIPERIDINE COMPOUNDS AND USES THEREOF

IPC classification:
A61K 31/498, A61P 25/04, C07D 401/14
Applicant:
Shionogi & Co. Limited (Shionogi Seiyaku Kabushiki-gaisha)
Applicant:
Purdue Pharma L.P.
Agent:
Derk Vos, Maiwald Patentanwalts GmbH
Status:
NO OPPOSITION FILED WITHIN TIMELIMIT
EP13175266

Composition and use thereof for the treatment of benign and malign diseases

IPC classification:
A61K 36/07, A61K 36/71, A61P 35/00
Agent:
Derk Vos, Maiwald Patentanwalts GmbH
Status:
APPLICATION DEEMED TO BE WITHDRAWN
EP13175264

Composition and use thereof for the treatment of tumor indications

IPC classification:
A61K 35/74, A61K 36/38, A61K 36/71, A61K 36/88, A61P 35/00
Agent:
Derk Vos, Maiwald Patentanwalts GmbH
Status:
APPLICATION DEEMED TO BE WITHDRAWN
EP13184176

Tetrahydropyridinyl and dihydropyrrolyl compounds and the use thereof

IPC classification:
A61K 31/44, A61P 25/04, A61P 25/28, C07D 401/04, C07D 401/14, C07D 409/14, C07D 413/04, C07D 413/14, C07D 451/02
Applicant:
Shionogi & Co. Limited (Shionogi Seiyaku Kabushiki-gaisha)
Applicant:
Purdue Pharma L.P.
Agent:
Derk Vos, Maiwald Patentanwalts GmbH
Status:
APPLICATION DEEMED TO BE WITHDRAWN
EP13193016

Buprenorphine analogs

IPC classification:
A61K 31/439, A61P 29/00, C07D 489/12
Applicant:
Purdue Pharma L.P.
Agent:
Derk Vos, Maiwald Patentanwalts GmbH
Status:
APPLICATION DEEMED TO BE WITHDRAWN
EP13727342

BENZOMORPHAN COMPOUNDS AS OPIOID RECEPTORS MODULATORS

IPC classification:
A61K 31/439, A61P 1/10, A61P 29/00, C07D 221/26
Applicant:
Purdue Pharma L.P.
Agent:
Derk Vos, Maiwald Patentanwalts GmbH
Status:
GRANT OF PATENT INTENDED
EP13765756

CYCLIC UREA- OR LACTAM-SUBSTITUTED QUINOXALINE-TYPE PIPERIDINE COMPOUNDS AND THE USES THEREOF

IPC classification:
A61K 31/498, A61P 3/00, A61P 25/00, C07D 471/08, C07D 498/08
Applicant:
Purdue Pharma L.P.
Agent:
Derk Vos, Maiwald Patentanwalts GmbH
Status:
EXAMINATION IN PROGRESS
EP13779344

1,3-DIOXANOMORPHIDES AND 1,3-DIOXANOCODIDES

IPC classification:
A61K 31/485, A61P 25/04, C07D 489/12
Agent:
Derk Vos, Maiwald Patentanwalts GmbH
Status:
PATENT GRANTED
EP13820881

PYRIDONEMORPHINAN ANALOGS AND BIOLOGICAL ACTIVITY ON OPIOID RECEPTORS

IPC classification:
A61K 31/437, A61P 29/00, C07D 471/18
Applicant:
Purdue Pharma L.P.
Agent:
Derk Vos, Maiwald Patentanwalts GmbH
Status:
PATENT GRANTED
EP13823986

SPIROCYCLIC MORPHINANS AND THEIR USE

IPC classification:
A61K 31/437, A61P 29/00, C07D 471/20
Applicant:
Purdue Pharma L.P.
Agent:
Derk Vos, Maiwald Patentanwalts GmbH
Status:
PATENT GRANTED
EP13821145

BUPRENORPHINE ANALOGS AS OPIOD RECEPTOR MODULATORS

IPC classification:
A61K 31/485, C07D 489/12
Applicant:
Purdue Pharma L.P.
Agent:
Derk Vos, Maiwald Patentanwalts GmbH
Status:
EXAMINATION IN PROGRESS
EP13820885

CYCLIC SULFONAMIDES AS SODIUM CHANNEL BLOCKERS

IPC classification:
A61K 31/429, A61K 31/438, A61K 31/501, A61K 31/542, A61P 25/00, C07D 417/04, C07D 417/14, C07D 491/10
Applicant:
Purdue Pharma L.P.
Agent:
Derk Vos, Maiwald Patentanwalts GmbH
Status:
EXAMINATION IN PROGRESS
EP13823991

7,8-CYCLICMORPHINAN ANALOGS

IPC classification:
A61K 31/438, A61P 29/00, C07D 471/08
Applicant:
Purdue Pharma L.P.
Agent:
Derk Vos, Maiwald Patentanwalts GmbH
Status:
The patent has been granted
EP13823996

SUBSTITUTED MORPHINANS AND THE USE THEREOF

IPC classification:
A61K 31/438, A61P 29/00, C07D 471/08
Applicant:
Purdue Pharma L.P.
Agent:
Derk Vos, Maiwald Patentanwalts GmbH
Status:
EXAMINATION IN PROGRESS
EP14765605

PROCESS FOR REMOVING SULPHUR COMPOUNDS FROM HYDROCARBONS

IPC classification:
C10G 27/00, C10G 67/12
Agent:
Derk Vos, Maiwald Patentanwalts GmbH
Status:
EXAMINATION REQUESTED
EP14770743

CRYSTALLINE FORMS OF TYROSINE KINASE INHIBITORS AND THEIR SALTS

IPC classification:
A61K 31/4965, A61P 17/00, A61P 35/00, C07D 241/04
Agent:
Derk Vos, Maiwald Patentanwalts GmbH
Status:
EXAMINATION REQUESTED
EP12704272

METHOD FOR EXTRACTING CRUDE OIL FROM CRUDE OIL RESERVOIRS WITH A HIGH RESERVOIR TEMPERATURE

IPC classification:
C09K 8/588
Applicant:
Wintershall Holding GmbH
Agent:
Derk Vos, Maiwald Patentanwalts GmbH
Agent:
Thorsten Dierkes, BASF SE
Status:
PATENT GRANTED
EP15154971

COMPOSITIONS COMPRISING HYALURONIC ACID AND BETA-GLUCAN FOR TOPICAL APPLICATIONS IN ORAL CAVITY

IPC classification:
A61K 8/04, A61K 8/73, A61K 9/00, A61K 9/06, A61K 31/716, A61K 31/719, A61K 31/723, A61K 31/728, A61Q 11/00
Agent:
Derk Vos, Maiwald Patentanwalts GmbH
Status:
EXAMINATION REQUESTED
EP11811127

LOW-TEMPERATURE SYNTHESIS OF METHYLPHENIDATE HYDROCHLORIDE

IPC classification:
C07D 211/34
Agent:
Derk Vos, Maiwald Patentanwalts GmbH
Status:
NO OPPOSITION FILED WITHIN TIMELIMIT
EP11813366

SUBSTITUTED PYRIDINES AS SODIUM CHANNEL BLOCKERS

IPC classification:
A61K 31/44, A61K 31/4439, A61P 25/00, C07D 213/75, C07D 401/02, C07D 401/12, C07D 401/14
Applicant:
Purdue Pharma L.P.
Agent:
Derk Vos, Maiwald Patentanwalts GmbH
Status:
NO OPPOSITION FILED WITHIN TIMELIMIT
EP14874289

NOVEL ANTI-AGGLOMERANTS FOR POLYISOBUTYLENE PRODUCTION

IPC classification:
C08J 3/03, C08J 3/20, C08K 5/098, C08L 23/22
Applicant:
BASF South East Asia Pte. Ltd.
Agent:
Derk Vos, Maiwald Patentanwalts GmbH
Status:
EXAMINATION REQUESTED
EP15748728

ISOQUINOLINE DERIVATIVES AND USE THEREOF

IPC classification:
A61K 31/4725, A61P 25/00, A61P 29/00, C07D 401/04, C07D 401/14, C07D 403/04
Agent:
Derk Vos, Maiwald Patentanwalts GmbH
Status:
EXAMINATION REQUESTED
EP15789868

BENZOMORPHAN ANALOGS AND USE THEREOF

IPC classification:
A61K 31/439, A61K 31/485, A61P 29/00
Applicant:
Purdue Pharma L.P.
Agent:
Derk Vos, Maiwald Patentanwalts GmbH
Status:
EXAMINATION REQUESTED
EP15799729

SPIROCYCLIC MORPHINANS AND USE THEREOF

IPC classification:
A61K 31/4166, C07D 471/20
Agent:
Derk Vos, Maiwald Patentanwalts GmbH
Status:
EXAMINATION REQUESTED
EP15807396

AZAMOPHINAN DERIVATIVES AND USE THEREOF

IPC classification:
C07D 471/08
Applicant:
Purdue Pharma L.P.
Agent:
Derk Vos, Maiwald Patentanwalts GmbH
Status:
EXAMINATION REQUESTED
EP15744360

REDUCTION OF ALPHA, BETA-UNSATURATED KETONE LEVELS IN MORPHINAN DERIVATIVE COMPOSITIONS

IPC classification:
A61K 31/485, A61P 25/00, A61P 29/00, C07D 489/08
Agent:
Derk Vos, Maiwald Patentanwalts GmbH
Status:
EXAMINATION REQUESTED
EP17151827

TRPV1 ANTAGONISTS INCLUDING DIHYDROXY SUBSTITUENT AND USES THEREOF

IPC classification:
A61K 31/428, A61K 31/496, A61P 1/04, A61P 13/00, A61P 19/02, A61P 25/02, A61P 25/04, A61P 29/00, C07D 417/12, C07D 417/14
Applicant:
Purdue Pharma L.P.
Agent:
Derk Vos, Maiwald Patentanwalts GmbH
Status:
EXAMINATION REQUESTED
EP15837467

INTEGRATED CONSOLE ENVIRONMENT FOR DIAGNOSTIC INSTRUMENTS METHODS AND APPARATUS

IPC classification:
G06F 19/00
Agent:
Derk Vos, Maiwald Patentanwalts GmbH
Status:
Request for examination was made
EP15841380

CRYSTALLINE FORMS OF TYROSINE KINASE INHIBITORS AND THEIR SALTS

IPC classification:
A61K 31/496, A61K 45/06, C07D 261/20
Agent:
Derk Vos, Maiwald Patentanwalts GmbH
Status:
Request for examination was made
EP14796608

SYSTEMS AND METHODS FOR IMAGING FLUID SAMPLES

IPC classification:
G01N 15/00, G01N 15/14
Agent:
Derk Vos, Maiwald Patentanwalts GmbH
Status:
Request for examination was made
EP15854489

DETECTION AND TREATMENT OF EXCESSIVE HAIR SHEDDING

IPC classification:
A61K 31/506, A61K 31/56, A61Q 7/00
Agent:
Derk Vos, Maiwald Patentanwalts GmbH
Status:
Request for examination was made
EP15866208

6.7-CYCLICMORPHINAN DERIVATIVES AND USE THEREOF

IPC classification:
A61K 31/438, C07D 471/08
Applicant:
Purdue Pharma L.P.
Agent:
Derk Vos, Maiwald Patentanwalts GmbH
Status:
Request for examination was made
EP16749686

ULTRASONIC GRAIN REFINING

IPC classification:
B22D 11/04, B22D 11/22, C22B 9/22
Agent:
Derk Vos, Maiwald Patentanwalts GmbH
Status:
Request for examination was made

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