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Table 7 Patents on medical cannabis most cited by patent examiners

From: Trends in intellectual property rights protection for medical cannabis and related products

Title and patent or patent application no.

Main topic

Assignee

Priority date

Citations

US6403126

Cannabinoid extraction method (US6403126B1 - Cannabinoid extraction method - Google Patents n.d.)

Extraction

WEBSAR INNOVATIONS

2001

160

US20020111377

Transdermal delivery of cannabinoids (US20020111377A1 - Transdermal delivery of cannabinoids - Google Patents n.d.)

Delivery mode

KENTUCKY ECONOMIC DEV FINANCE AUTHORITY

2001

91

US20110052694A1

Use of cannabidiol prodrugs in topical and transdermal administration with microneedles (US20110052694A1 - Use of cannabidiol prodrugs in topical and transdermal administration with microneedles - Google Patents n.d.)

Delivery mode

ZYNERBA PHARM

2010

90

WO2009007697A1

New pharmaceutical formulation comprising cannabidiol and tetrahydrocannabidivarin (WO2009007697A1 - New pharmaceutical formulation comprising cannabidiol and tetrahydrocannabidivarin - Google Patents n.d.)

Formulation

GW Pharma

2008

70

US20040049059A1

Method for producing an extract from cannabis plant matter, containing a tetrahydrocannabinol and a cannabidiol and cannabis extracts (US20040049059A1 - Method for producing an extract from cannabis plant matter, containing a tetrahydrocannabinol and a cannabidiol and cannabis extracts - Google Patents n.d.)

Extraction

BIONORICA ETHICS GmbH

2004

73

US6113940

Cannabinoid patch and method for cannabis transdermal delivery (US6113940A - Cannabinoid patch and method for cannabis transdermal delivery - Google Patents n.d.)

Delivery mode

PATCHTEK INC

1997

68

US6949582

Method of relieving analgesia and reducing inflammation using a cannabinoid delivery topical liniment (US6949582B1 - Method of relieving analgesia and reducing inflamation using a cannabinoid delivery topical liniment - Google Patents n.d.)

Delivery mode and treatment

WALTER H WALLACE

2005

72

US20060039959

Film-shaped mucoadhesive administration forms for administering cannabis agents (US20060039959A1 - Film-shaped mucoadhesive administration forms for administering cannabis agents - Google Patents n.d.)

Delivery mode

LTS LOHMANN THERAPIE-SYSTEME AG

1991

64

US5227537

Method for the production of 6,12-dihydro-6-hydroxy-cannabidiol and the use thereof for the production of trans-delta-9-tetrahydrocannabinol (US5227537A - Method for the production of 6,12-dihydro-6-hydroxy-cannabidiol and the use thereof for the production of trans-delta-9-tetrahydrocannabinol - Google Patents n.d.)

Production of synthetic cannabinoid

HEINRICH MACK NACHF.

1993

61

WO2017026897A1

Extraction device and an extraction method for extraction of cannabis (WO2017026897A1 - Extraction device and an extraction method for extraction of cannabis - Google Patents n.d.)

Extraction

BRUINING, WERNARD ERNEST

2015

4