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]
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
- Summarize IP activity over the years
- Identify major players
- Conduct patent analysis
a) Composition b) Nature c) Action
Alopecia occurs due to
- Hormonal effects of androgens
- Reduction of blood circulation around hair follicle
- Deactivation of hair matrix cells
And then
- Analyze patents pertaining to high sebum activity
Approach
Broad search conducted on hair loss patents.
Patent information sourced through SIP.
Patents selected randomly 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
- Assignees with more than 20 patents to their credit
- Assignees with less than 20 patents to their credit
- Active Assignees
Assignees currently active with more than 5 patents to their credit during 2000-2005, among them following are the leaders of 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
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.
| 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
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.
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.
Composition nature matrix
Focus on different aspects
Focus on patents
Focus on Technology
Distribution on different aspects
Distribution based on patent types
Distribution of key ingredients
Other attributes of the 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
Distribution of patents based on target diseases
Distribution of patents based on application
Questions Dolcera Answers
What’s hot?
- What compositions/ approaches are the most promising?
- What can I license?
- Can you map blockbuster products to their patents?
Can you save me some time?
- What combinations/ compounds have already been tried?
- Is any empirical data available?
- Can you tell me the side effects?
Where should I focus my R&D investment?
- What are the most promising approaches?
- Where’s the ‘white space’ for me to play in?
Any hints for research?
- Are there any combinations I could develop?
What should I do in this geography?
- What are my competitors up to in this geography?
- What are my strengths/ weaknesses here?
What’s my competition up to?
- What’s my top competitor investing in?
- Are there any loopholes in their patents?
- When are their patents expiring?
- Will a competitor emerge from nowhere and surprise me?
- What are the crowded areas?
How do I play defense?
- What should my blocking/reactive strategies be?
New Combinations based on IP study?
Yes, new Combinations can be made with natural products based on IP study
- Walnut extract containing
inhibitor (as anti-androgen) and Flavnones (for vasodilation). - Sophora Flavnones (for vasodilation) in combination with Saw Palmetto berry (as anti-androgen).
Note: The above combinations are based on limited study and are only possible examples
IP studies provides
Technology trends
- Use of saw palmetto berry for treating alopecia was first patented in 1996.
- Since then, 144 patents (including family patents) have been filed till 2006.
- Most patents use saw palmetto berry in combination with other products.
New opportunities
Yes, the IP studies provide new opportunities in the following area.
- Sophora Flavescens contain flavnoids.
- Natural extract Sophora Flavescens cited in LG patent of 2001.
- Research shows fewer than 7 patents based on Sophora Flavescens for hair loss or alopecia.
Conclusions
- Hair loss medication is a very active area of research and intellectual property development.
- One of the most promising areas of development is the area of Anti-androgens.
- The top companies are Merck, L’Oreal and Smithkline.