Rationale
- “Medication for men plagued by hair loss has become a topic of interest in Japan since a drug company began marketing it at the end of last year." March 5th, 2006 – [1]
- “An increasing number of companies are apparently turning the Chinese fear of a bald spot into big bucks with some doing so well they are branching out into other countries.” February 16, 2006 – [2]
Alopecia IPMap
Introduction
Hair Basics
- Hair is a complex and delicate part of the body
- Keeping it healthy and beautiful is a challenge
- Structure of Hair root - [3]
- Structure of Hair bulb - [4]
Reasons for Hair loss
Both men and women lose hair for similar reasons. Hair loss in men is often more dramatic, and follows a specific pattern of loss which has been termed “Male Pattern Baldness” (Androgenetic Alopecia).
Main reasons
- Hormonal effect of androgen
- Reduction of blood circulation around hair follicle
- Deactivation of hair matrix cells
Some facts from Japan
- Market size: ¥ 30 Billion
- Number of products: more than 100
(JICST-EPlus - Japanese Science & Technology)
Goals
The goal of this report is to:
- Summarize IP activity over the years
- Identify major players
- Conduct patent analysis
a) Composition b) Nature c) Action
And then
- Analyze patents pertaining to high sebum activity
Approach
- A broad search was conducted on hair loss patents.
- Patent information was sourced through SIP.
- A set of patents was selected for analysis.
Composition of treatment for causes are identified and categorized as follows:
- Anti-androgen
- Minoxidil
- Double action (Anti-androgen + Mindoxidil)
- Hair matrix cells activator
- Sebum production inhibitor
IP activity over years
The graph indicates:
- Number of patents filed every 5 years (except for first 7 years).
- First solution proposed in 1973
- Filing trend indicates steep rise in activity recently.
Major Players
- Active Assignees
Assignees currently active with more than 5 patents to their credit during 2000-2005.
- Warner with 9 patents,
- Bristol with 6 and
- Abbott with 5.
Anti-androgens
- Anti-androgen is a substance that inhibits biological effects of androgenic hormones
- 5-alpha reductase + Testosterone = Dihydrotestosterone (DHT)
- DHT attaches to an Androgen Receptor.
- DHT causes increase in hair loss and gradual miniaturization of the follicle, which eventually dies resulting hair loss
=== Functions of Anti-androgen === Anti-androgen
IP Map for Anti-androgen
| Pat/Pub# | Nature | Composition | Composition action |
|---|---|---|---|
| US20060009430
BLOTECH (2004) |
Natural extracts | Palmetto berry extract (fatty acids & sterols), Pumpkin seed extract (Vitamins-B, alpha-linolenic acid, amino acids and phytosterols), Quercetin (Flavonoids) and Beta-sitosterol (Rice bran, wheat germ, corn oils and soybeans) | Fatty acids – Inhibit testosterone
Sterols - Mechanism of action unknown. Quercetin results in cell growth cycle. Beta-sitosterol reduce inflammation on scalp |
| US20060009427
WARNER LAMBERT(2004) |
Organic compound | New class of 4-cycloalkoxy benzonitrile derivatives and salts | Acts as androgen receptor modulators and blocks formation of DHT. |
| US20050085467
WARNER LAMBERT(2004) |
Organic compound | New class of 6-sulfonamido-quinolin-2-one and 6-sulfonamido-2-oxo-chromene derivatives. | The compounds inhibit, or decrease, activation of androgen receptor by androgens. |
| US20050118282
APHIOS Corp (2003) |
Natural extracts | Supercritical fluid isolate of Saw Palmetto and Sperol (Serenoa repens berry) and their analogs or derivatives. | Modulates androgenic activity by inhibiting 5.alpha.-reductase activity. |
| US20060009429
Fundacion Pablo Cassara (2003) |
Nucleotide | Pharmacologically active oligonucleotides (encompass both DNA and S-DNA bond) | Oligonucleotides inhibit androgen receptor (AR) expression at very low concentrations in skin and hair follicle |
| US20030007941
PFIZER INC (2001) |
Organic compound | Thyromimetic compounds (structurally similar to thyronine) with finasteride, or cyproterone acetate | Activates thyroid hormone receptors in hair follicle which in turn promote elasticisation of follicle walls and hair follicle |
| US20030073616
N/A (1995) |
Peptides/nucleic acid | Bradykinin antagonist (peptide of plasma origin from kininogen precursor-kallikrein) | Inhibit synthesis of bradykinin receptors or compounds by binding to B2 receptor |
| EP0279010
KAO Corp (1987) |
Natural extracts | Walnut extract (leaves/pericarps) with an organic solvent | Blocks formation of DHT |
Minoxidil
- A thick network of tiny veins and arteries lines the outer wall of the follicle. Blood pumps through the bulb and hair via this network
- Minoxidil dilates blood vessels; which is also called as “potassium channel opener”
- Minoxidil sulfate (MS) appears to be the active metabolite responsible for hair growth stimulation.
=== Functions of Monoxidil === Minoxidil
IP Map for Minoxidil
| Pat/Pub# | Nature | Composition | Composition action |
|---|---|---|---|
| US20040157856
WARNER LAMBERT(2002) |
Organic compound | Benzopyran compounds | Rapidly metabolizes, and causes reduced cardiovascular effects as compared to other known potassium channel openers |
| US20050053572
LG HOUSEHOLD & HEALTH CARE(2001) |
Natural extracts | Sophora flavescens extract (alkaloids & flavonoids, luteolin-7-glucose and cytosine) Hinokitiol (Taiwan hinoki oil, Aomori, Western Red Cedar oil) and Nicotinamide (Vitamin B complex) | Promotes function of cell activity and dilates blood vessels |
Double action (Anti-androgen + Minoxidil)
- Combination of Minoxidil + Anti-androgen (double action) composition for effective treatment of Male-Pattern Baldness
=== Functions of (Anti-androgen + Minoxidil) === Anti-androgen and Minoxidil
IP Map for (Anti-androgen + Minoxidil)
| Pat/Pub# | Nature | Composition | Composition action |
|---|---|---|---|
| US20060052405
N/A(2000) |
Peptides | Testosterone blocker or vascular toner (Flutamide, cyproterone acetate, spironolactone, progesterone, or analogs or derivatives) and minoxidil mixed along with non-retinoid penetration enhance and sunscreen | Inhibits 5.alpha.-reductase activity (block DHT) and increase blood flow on the scalp |
| US20050123577
L'OREAL(2000) |
Peptides | Prostaglandin (polyunsaturated fatty acids) EP-2, EP-3 EP-4 receptor agonist with Minoxidil, 2,4-diaminopyrimidine 3-oxide, and Aminexil, cyclic AMP | Minoxidil (designed to mimic nitric oxide's effects) grows hair via prostaglandin-H synthase stimulation. EP-3 and EP-4 are expressed in anagen hair follicles which induce a reduction in the level of cAMP |
| US6447762
COLOMER GROUP(1999) |
Natural extract | Hop extract (oil contains terpenes and humulene), Rosemary extract (hydroalcohol), Swertia extract (glycol with a swertiamarin), Silanodiol salicylate (biologically active silicon compound) | Inhibits activity of 5-alpha-reductase, protects follicular cell membranes by neutralizing action of oxidation reaction in tissues, stimulates hair follicles and blood circulation to the hair root, supplies oxygen and nutrients to base of follicle, retains humidity, avoids dehydration of scalp |
Hair matrix cell activator
- Stem cells of the hair follicle are gathered in the basal layer of the outer root sheath bulge.
- It is from these cells that matrix cells are formed.
- Growth and differentiation of the matrix cells are under the influence of substances produced by cells of the dermal papilla.
=== Functions of Hair matrix cell activator === Hair matrix cell activator
IP Map for Hair matrix cell activator
| Pat/Pub# | Nature | Composition | Composition action |
|---|---|---|---|
| US20020052498
SHISEIDO(1999) |
Organic compound | (2-substituted oxyphenyl) alkanamide derivative and its salt | Mechanism of action has not been made clear, having excellent hair follicle activating action and regrowth promoting effect |
| US20040071647
L'OREAL(1998) |
Peptides | Metalloprotease (MMP-9) inhibitor (thiol or a hydroxamate) other than chelating calcium ions | Reducing the expression of MMPs (Metalloproteases) in the scalp - slow down or inhibit the degradation of the perifollicular matrix (extracellular matrix surround the hair follicle) |
Sebum Production Inhibitor
- Sebum, a complex mixture of lipid substances, is secreted from sebaceous glands associated with hair follicles.
- The inhibitor blocks the excessive sebum production produces greasy effect on hair and scalp and also responsible for thinning and loosing of hair.
Functions of Sebum Production Inhibitor
IP map for Sebum Production Inhibitor
| Pat/Pub# | Nature | Composition | Composition action |
|---|---|---|---|
| US20050277699
Unilever(2005) |
Natural extract and organic compound | Polyamine (putrescine, spermine or spermidine) analogs and/or derivatives; DFMO; N-acetyl cysteines; neutralized salts of a non-hydroxy C2-C40 dicarboxylic acids, preferably malonate salts; and mixtures thereof. | Decreasing sebum production and/or pore size |
| US20050244362
KAO COPR.(2004) |
Natural extract and organic compound | Avocado oil (Butyl esters of fatty acids) | Reduce sebum of the hair and scalp |
| US4529587
Unilever(1982) |
organic compound | Biotin antagonist or a salt thereof | Decrease activity of the enzyme acetyl-SCoA-carboxylase and hence reduce lipid synthesis in sebaceous glands so that less sebum is produced |
Composition nature matrix
IP map for Composition nature matrix
| Year | Organic Compound | Natural extracts | Peptides | Nucleotides | Natural extract + Organic comp |
|---|---|---|---|---|---|
| 2005 | .... | .... | .... | .... | UNILEVER (1) |
| 2004 | WARNER (1) | BLOTECH (1) | .... | .... | KAO (1) |
| 2003 | WARNER (1) | APHIOS (1) | .... | FUNDIACION (1) | .... |
| 2002 | WARNER (1) | .... | .... | .... | .... |
| 2001 | PFIZER (1) | LG HEALTH-CARE (1) | .... | .... | .... |
| 2000 | .... | .... | L’OREAL (1) / N/A (1) | .... | .... |
| 1999 | SHISEDIO (1) | COLOMER (1) | .... | .... | .... |
| 1998 | .... | .... | L’OREAL (1) | .... | .... |
| 1995 | .... | .... | N/A (1) | .... | .... |
| 1987 | .... | KAO (1) | .... | .... | .... |
| 1982 | UNILEVER (1) | .... | .... | .... | .... |
Focus of patents
| Focus of patents | Patent no. | Rec. no. |
|---|---|---|
| 2-substituted oxyphenyl alkanamide derivative having excellent hair growth effect. | US20020052498 | 1 |
| Thyromimetic compounds, and its role in treating hair loss | US20030007941 | 2 |
| Saw Palmetto berry extract, pumpkin seed extract, sitosterol and quercetin for the treatment and prevention of the biologically detrimental effects of DHT | US20060009430 | 3 |
| 4-cycloalkoxy benzonitriles and its use as androgen receptor modulators | US20060009427 | 4 |
| Supercritical fluid isolate of Saw Palmetto, Sperol for inhibition of 5-.alpha.-reductase activity | US20050118282 | 5 |
| New class of quinolin-2-ones and chromen-2-ones andtheir use as androgen receptor antagonists | US20050085467 | 6 |
| Antiandrogen oligonucleotides usable for the treatment of dermatological androgen-related disorders | US20060009429 | 7 |
| Bradykinin antagonists for stimulating or inducing hair growth and/or arresting hair loss | US20030073616 | 8 |
| Extract from walnut leaves and/or pericarps as 5 alpha -reductase inhibitor | EP0279010 | 9 |
| Stimulating hair growth using benzopyrans | US20040157856 | 10 |
| Sophora flavescens extract, Coicis semen extract, clove extract, etc for promoting hair growth, function of cell activity and dilating peripheral blood vessels. | US20050053572 | 11 |
| Compositions to prevent or reduce hair loss | US20060052405 | 12 |
| Prostaglandin EP-3 receptor antagonists for reducing hair loss | US20050123577 | 13 |
| Synergic effect arising from the interaction of active ingredients, consisting of three plant extracts and a synthetic organosilicic compound for prevent hair loss and stimulate hair growth | US6447762 | 14 |
| Metalloprotease inhibitors to induce and/or stimulate the growth | US20040071647 | 15 |
| Method of decreasing sebum production and pore size | US20050277699 | 16 |
| Method for reducing sebum on the hair and skin | US4529587 | 17 |
Focus of patents by technology
Distribution of patents
Distribution based on patent types
Distribution of patents by their key ingredients
Distribution based on target diseases
Key ingredients vs. Target disease/disorder
Target species
Mode of administration
Product type vs. Product form
Distribution of patents based on different aspects
List of patents
| Rec. no. | Patent no. | Rec. no. | Patent no. |
|---|---|---|---|
| 1 | US20020052498 | 10 | US20040157856 |
| 2 | US20030007941 | 11 | US20050053572 |
| 3 | US20060009430 | 12 | US20060052405 |
| 4 | US20060009427 | 13 | US20050123577 |
| 5 | US20050118282 | 14 | US6447762 |
| 6 | US20050085467 | 15 | US20040071647 |
| 7 | US20060009429 | 16 | US20050277699 |
| 8 | US20030073616 | 17 | US20050244362 |
| 9 | EP0279010 | 18 | US4529587 |
Distribution of patents based on target diseases
| Target disease/ disorder | Patent no. | Rec. no. |
|---|---|---|
| Alopecia areata, alopecia pityrodes or alopecia seborrheica, or androgenic alopecia (i.e. male pattern baldness) | US20020052498 | 1 |
| Alopecia areata, male pattern baldness and female pattern baldness | US20030007941 | 2 |
| Androgenic alopecia (i.e. male pattern baldness), prostatic hyperplasia or both. | US20060009430 | 3 |
| Inappropriate activation of the androgen receptor, acne, oily skin, alopecia | US20060009427 | 4 |
| Prostatic hyperplasia, prostatic cancer, hirsutism, acne, male pattern baldness, seborrhea, and other diseases related to androgen hyperactivity | US20050118282 | 5 |
| Alopecia, acne, oily skin, prostrate cancer, hirsutism, and benign prostate hyperplasia | US20050085467 | 6 |
| Androgen-associated hair loss and androgen-skin related disorders. | US20060009429 | 7 |
| Androgenetic or androgenic alopecia or androgeno-genetic alopecia | US20030073616 | 8 |
| Diseases caused by testosterone (male-pattern alopecia) | EP0279010 | 9 |
| Alopecia areata, female pattern hair loss, hair loss secondary to chemotherapy or radiation treatment, stress-related hair loss, self-induced hair loss, scarring alopecia, and alopecia in non-human mammal | US20040157856 | 10 |
| Male pattern alopecia | US20050053572 | 11 |
| Alopecia, androgenic alopecia | US20060052405 | 12 |
| Hair loss | US20050123577 | 13 |
| Male pattern alopecia | US6447762 | 14 |
| Androgenetic, androgenic or androgenogenetic alopecia | US20040071647 | 15 |
| Curing other scalp related problems | US20050244362 | 16 |
Distribution of patents based on application
Interactive Signaling Pathway and linkages
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Players of Wnt inhibition Pathway
| Rec. no. | Patent no. | Rec. no. | Patent no. |
|---|---|---|---|
| 1 | US20020052498 | 10 | US20040157856 |
