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Silo Pharma Receives European Patent Allowance for Licensed Novel PTSD Prevention Therapy

(Positive)
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Silo Pharma (Nasdaq: SILO) announced the European Patent Office issued a Rule 71(3) communication indicating intent to grant a patent (European Application No. 20786878.7) covering prophylactic use of 5-HT4 receptor agonists to prevent stress-induced fear and depressive-like behavior.

The allowance expands Silo's licensed IP from Columbia University, may protect major European markets once granted, and the company is evaluating Unitary Patent and national validations to maximize coverage.

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Positive

  • EPO intent to grant for European application No. 20786878.7
  • Allowed claims cover preventative use targeting the 5-HT4 pathway
  • Company is evaluating Unitary Patent and national validations to broaden coverage

Negative

  • Allowance is a Rule 71(3) communication; patent not yet formally granted
  • European protection subject to national validations and Unitary Patent decisions
  • Silo's rights are licensed from Columbia University, implying dependence on licensed IP

News Market Reaction – SILO

+49.02% 30.2x vol
40 alerts
+49.02% Session close to close
+120.7% Peak in 27 hr 7 min
$7.51M Market Cap
30.2x Rel. Volume

In the Apr 7 session, SILO gained 49.02%, reflecting a significant positive market reaction. Argus tracked a peak move of +120.7% during that session. Our momentum scanner triggered 40 alerts that day, indicating elevated trading interest and price volatility. Trading volume was exceptionally heavy at 30.2x the daily average, suggesting very strong buying interest.

Data tracked by StockTitan Argus on the day of publication.

Market Context

The stock surged +49.0% in the session following this news. A strong positive reaction aligns with S...
Analysis

The stock surged +49.0% in the session following this news. A strong positive reaction aligns with Silo Pharma’s pattern of meaningful moves around capital allocation and IP milestones, such as the +24% response to its $1,000,000 buyback authorization. However, past IP news has sometimes seen negative follow-through, and recent filings highlight ongoing financing and clinical risks. Investors would need to consider whether enthusiasm might fade as initial patent excitement normalizes and execution, trial progress, and funding needs regain focus.

Key Figures

European patent application: No. 20786878.7 Target pathway: 5-HT4 receptor
2 metrics
European patent application No. 20786878.7 European Patent Application for PTSD prevention therapy
Target pathway 5-HT4 receptor Therapy targets serotonin 4 (5-HT4) receptor pathway

Historical Context

5 past events · Latest: Feb 23 (Positive)
Pattern 5 events
Date Event Sentiment 24h Move Catalyst
Feb 23 Share buyback launch Positive +24.0% Board-authorized repurchase program of up to $1,000,000 in stock.
Feb 18 Japan patent allowance Positive -3.2% Notice of Allowance in Japan for SPC-15 PTSD intranasal patent.
Dec 30 Phase 1 LOI SPC-15 Positive +4.7% LOI with Allucent to support two planned Phase 1 SPC-15 studies.
Nov 17 Allucent IND support Positive -1.1% Partnership with Allucent to prepare 2026 FDA IND for SPC-15.
Oct 29 Crypto treasury move Neutral -1.9% Selection of Alphaledger T12 tokenized RWA fund for treasury strategy.

24h Move is the share-price change in the day after each event; other market factors may also have contributed.

Pattern Detected

Recent news shows mixed reactions: buyback and clinical steps often saw positive moves, while some IP and strategic news drew modest pullbacks.

Recent Company History

Over the last six months, Silo reported a mix of IP, clinical, capital markets, and crypto‑strategy developments. A $1,000,000 buyback authorization on Feb 23, 2026 coincided with a +24% move, while a Japanese PTSD patent allowance on Feb 18, 2026 saw a -3.17% reaction. Earlier, Allucent collaborations for SPC-15 clinical planning and an IND strategy generated modestly positive or slightly negative moves. A tokenized RWA crypto-treasury step in Oct 2025 drew a small decline. Today’s European patent allowance further extends the IP expansion trend.

Key Terms

european patent office, serotonin 4 receptor agonists, 5-ht4, unitary patent, +1 more
5 terms
european patent office regulatory
"the European Patent Office (EPO) has issued a Rule 71(3) communication"
The European Patent Office is the regional agency that examines and grants patents valid in many European countries under a common system. For investors, EPO patents are important because they can give a company time-limited exclusive rights to an invention, acting like a legal lock that can protect market share, enable licensing income, and signal technical strength or reduced competition. Patent grants and rejections can materially affect a company’s value and future revenue prospects.
serotonin 4 receptor agonists medical
"using selected serotonin 4 (5-HT4) receptor agonists — a differentiated approach"
Serotonin 4 receptor agonists are drugs that turn on a specific receptor in the body called the 5-HT4 receptor, helping certain cells respond more strongly to the natural chemical serotonin. Think of the receptor as a light switch and these drugs as flipping it to speed up processes such as gut movement or to boost nerve signaling in the brain. For investors, they matter because successful drugs in this class can change clinical trial outcomes, regulatory approval chances, safety profiles, and ultimately the commercial potential of companies developing them.
5-ht4 medical
"therapy targeting 5-HT4 Pathway and Expands Silo Pharma IP Portfolio"
5-HT4 is a specific protein on the surface of certain cells that responds to the brain chemical serotonin; think of it as a lock that only particular serotonin-like keys can open. It matters to investors because drugs that activate or block this receptor are developed to treat conditions such as digestive disorders and some brain-related symptoms, so the receptor is a common drug target whose clinical success or failure can determine a drug candidate’s commercial value and regulatory risk.
unitary patent regulatory
"The Company is evaluating Unitary Patent protection and key national validations"
A unitary patent is a single patent right that provides uniform protection across multiple participating countries in a region, replacing the need to maintain separate national patents in each country. For investors, it matters because it can reduce the cost and complexity of protecting and enforcing key technologies across markets, affecting a company’s competitive moat, licensing revenue potential, and the scale and cost of patent litigation—similar to holding one passport instead of many.
cns therapeutics medical
"portfolio targeting next-generation CNS therapeutics with differentiated mechanisms"
CNS therapeutics are medicines and treatments designed to prevent, slow, or cure disorders of the central nervous system — the brain and spinal cord — such as Alzheimer’s, Parkinson’s, epilepsy, and multiple sclerosis. For investors, they matter because developing these therapies is like fixing a complex computer network: it can be technically difficult, costly and slow, but successful products can command large markets, long patent protection and significant returns, while failures pose high clinical and regulatory risk.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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EPO Greenlights Claims Covering Preventative use of therapy targeting 5-HT4 Pathway and Expands Silo Pharma IP Portfolio

SARASOTA, FL, April 06, 2026 (GLOBE NEWSWIRE) -- Silo Pharma, Inc. (Nasdaq: SILO) (“Silo” or the “Company”), a developmental stage biopharmaceutical company focused on developing novel formulations and drug delivery systems for traditional therapeutics and psychedelic treatments, today announced that the European Patent Office (EPO) has issued a Rule 71(3) communication indicating its intent to grant a patent for an European patent application titled “Prophylactic Efficacy of Serotonin 4 Receptor Agonists Against Stress” (European Patent Application No. 20786878.7) that the Company has an exclusive license from Columbia University.

The allowed claims cover methods of preventing stress-induced fear and depressive-like behavior and associated affective disorders using selected serotonin 4 (5-HT4) receptor agonists — a differentiated approach targeting pathways associated with stress resilience rather than just symptom management.

“This is a high-value milestone that strengthens our global intellectual property position and underscores the potential of our 5-HT4 program,” said Eric Weisblum, CEO of Silo Pharma. “We believe this approach represents a compelling shift toward proactive treatment of stress-related disorders, which remain a massive and underserved market.”

The patent, once granted, is expected to protect major European markets, further enhancing Silo’s strategic positioning as it advances its pipeline. The Company is evaluating Unitary Patent protection and key national validations to maximize geographic coverage and long-term value.

With growing global focus on mental health and stress-related conditions, Silo Pharma continues to build a portfolio targeting next-generation CNS therapeutics with differentiated mechanisms of action.

About Silo Pharma, Inc.

Silo Pharma is a diversified developmental-stage biopharmaceutical and cryptocurrency treasury company. Its therapeutic focus is on addressing underserved conditions, including stress-induced psychiatric disorders, chronic pain, and central nervous system (CNS) diseases. The Company’s portfolio includes innovative programs such as SPC-15 for PTSD, SP-26 for fibromyalgia and chronic pain, and preclinical assets targeting Alzheimer’s disease. Silo’s research is conducted in collaboration with leading universities and laboratories. silopharma.com

Forward Looking Statements

This news release contains “forward-looking statements” within the meaning of the “safe harbor” provisions of the Private Securities Litigation Reform Act of 1995. These statements are identified using words “could”, “believe”, “anticipate”, “intend”, “estimate”, “expect”, “may”, “continue”, “predict”, “potential”, and similar expressions that are intended to identify forward-looking statements. Such statements involve known and unknown risks, uncertainties, and other factors that could cause the actual results of the Company to differ materially from the results expressed or implied by such statements, including statements about the intended use of proceeds from the offering, changes to anticipated sources of revenues, future economic and competitive conditions, difficulties in developing the Company’s technology platforms, retaining and expanding the Company’s customer base, fluctuations in consumer spending on the Company’s products and other factors. Accordingly, although the Company believes that the expectations reflected in such forward-looking statements are reasonable, there can be no assurance that such expectations will prove to be correct. The Company disclaims any obligations to publicly update or release any revisions to the forward-looking information contained in this press release, whether as a result of new information, future events, or otherwise, after the date of this press release or to reflect the occurrence of unanticipated events except as required by law.

Contact
(800) 705-0120
investors@silopharma.com


FAQ

What did Silo Pharma (SILO) announce on April 6, 2026 about a European patent?

Silo received an EPO Rule 71(3) communication indicating intent to grant a patent covering prophylactic 5-HT4 use. According to the company, the allowed claims target prevention of stress-induced fear and depressive-like behavior.

What does the EPO allowance mean for Silo Pharma's IP protection in Europe (SILO)?

The allowance signals likely patent grant protecting major European markets if finalized. According to the company, it strengthens the licensed IP position and supports strategic geographic protection planning.

Is the granted European patent final for Silo Pharma (SILO) and when will it take effect?

No; the EPO issued a Rule 71(3) notice indicating intent to grant but formal grant remains pending. According to the company, final grant and national validations will determine exact timing and coverage.

What specifically do the allowed claims for Silo Pharma's (SILO) patent cover?

The allowed claims cover methods preventing stress-induced fear and depressive-like behavior using selected 5-HT4 receptor agonists. According to the company, this targets stress resilience rather than only symptom management.

How might Silo Pharma (SILO) expand protection across Europe after the EPO allowance?

Silo is evaluating Unitary Patent protection and key national validations to maximize geographic coverage. According to the company, these steps aim to extend enforcement across major European markets.

Does Silo Pharma (SILO) own the patent outright or is it licensed?

The patent application is exclusively licensed to Silo from Columbia University. According to the company, Silo holds exclusive licensing rights for the covered claims in the permitted jurisdictions.