Last Updated: May 3, 2026

PERIOCHIP Drug Patent Profile


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Which patents cover Periochip, and when can generic versions of Periochip launch?

Periochip is a drug marketed by Dexcel Pharma and is included in one NDA.

The generic ingredient in PERIOCHIP is chlorhexidine gluconate. There are fifty-eight drug master file entries for this compound. Fifty-six suppliers are listed for this compound. Additional details are available on the chlorhexidine gluconate profile page.

DrugPatentWatch® Litigation and Generic Entry Outlook for Periochip

A generic version of PERIOCHIP was approved as chlorhexidine gluconate by BECTON DICKINSON on October 24th, 1989.

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Summary for PERIOCHIP
US Patents:0
Applicants:1
NDAs:1

US Patents and Regulatory Information for PERIOCHIP

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Exclusivity Expiration
Dexcel Pharma PERIOCHIP chlorhexidine gluconate TABLET;DENTAL 020774-001 May 15, 1998 DISCN Yes No ⤷  Start Trial ⤷  Start Trial ⤷  Start Trial
>Applicant >Tradename >Generic Name >Dosage >NDA >Approval Date >TE >Type >RLD >RS >Patent No. >Patent Expiration >Product >Substance >Delist Req. >Exclusivity Expiration

International Patents for PERIOCHIP

See the table below for patents covering PERIOCHIP around the world.

Country Patent Number Title Estimated Expiration
World Intellectual Property Organization (WIPO) 8707140 ⤷  Start Trial
Australia 621521 ⤷  Start Trial
Denmark 175590 ⤷  Start Trial
Japan 2798386 ⤷  Start Trial
European Patent Office 0388220 Compositions pour la libération retardée de la chlorhexidine. (Compositions for the sustained release of chlorhexidine.) ⤷  Start Trial
Spain 2068999 ⤷  Start Trial
>Country >Patent Number >Title >Estimated Expiration

PERIOCHIP: Investment scenario and fundamentals analysis (patent and IP-led)

Last updated: April 25, 2026

What is PERIOCHIP and what is its commercial proposition?

PERIOCHIP is a locally delivered chlorhexidine gluconate device used in periodontal therapy. It is marketed as an adjunct to scaling and root planing for chronic periodontitis. The product is designed to release chlorhexidine over time directly into periodontal pockets, aiming to improve periodontal outcomes with reduced systemic exposure versus systemic antimicrobials.

Commercially, the value case for PERIOCHIP sits in three lanes:

  • Procedure adjacency: used with office-based periodontal care (scaling and root planing), which can drive recurring utilization patterns.
  • Local antisepsis: chlorhexidine is a mature antimicrobial with well-understood safety and regulatory familiarity.
  • Differentiated delivery: a device format can support payer and prescriber acceptance when clinical endpoints and tolerability are favorable.

What are the key fundamentals that drive PERIOCHIP revenue durability?

Revenue durability for an established periodontal device is typically driven by market access, clinical positioning, and competitive substitutes.

Core fundamentals

  1. Indication specificity

    • PERIOCHIP is tied to chronic periodontitis workflows and adjunct treatment protocols.
    • That anchoring reduces substitution by unrelated antimicrobial products, but it does not prevent substitution within periodontal antiseptics.
  2. Competitive substitutes (class and format)

    • Direct displacement risk comes from other local antiseptic or anti-infective adjuncts in periodontal disease management.
    • Indirect risk comes from changes in clinical practice (for example, shifts toward other adjuncts, more aggressive mechanical regimes, or different antibiotic stewardship patterns).
  3. Market access and prescriber inertia

    • Once integrated into routine periodontal protocols, uptake tends to be sticky.
    • Evolving clinical guidelines can change utilization rates even when the product remains clinically accepted.
  4. Supply-chain and device manufacturing

    • Device products depend on validated manufacturing and shelf-life stability for consistent release kinetics and packaging integrity.

What is the patent and IP posture that matters for PERIOCHIP investors?

PERIOCHIP’s IP value depends on whether the chlorhexidine device product is protected by:

  • composition-of-matter patents on chlorhexidine (unlikely to be enforceable due to age),
  • method-of-use patents (adjunct periodontal indications, treatment regimens, dosing schedules),
  • formulation/device patents (the carrier, release matrix, or device architecture),
  • and any regulatory exclusivity (where applicable) that blocks generic or follow-on device entry.

IP reality check for chlorhexidine devices

Chlorhexidine gluconate is an old, widely known antimicrobial. For most chlorhexidine products, the sustainable patent estate is typically in formulation and device construction, and in specific medical use claims, not in the active itself.

Actionable implication for an investor: the valuation hinge is less “chlorhexidine IP” and more “PERIOCHIP’s proprietary device/formulation and claimed periodontal protocols,” plus whether those claims survive challenges and are still enforceable across target jurisdictions.

What does the likely investment scenario look like under two IP paths?

Scenario A: Narrow, expiring, or readily designed-around claims

Outcome profile

  • Generic or follow-on local chlorhexidine devices enter once key method-of-use or formulation barriers expire.
  • Differentiation shifts from legal exclusivity to clinical and commercial execution (pricing, access, evidence, and clinician familiarity).

Investment posture

  • Focus on cash-flow durability through substitution cycles and demand retention.
  • Prefer assets with (a) strong current market share, (b) differentiated evidence base, and (c) manufacturing scale advantages.

Scenario B: Strong, enforceable method-of-use and device claims

Outcome profile

  • Delays in follow-on entry through injunction risk or settlement-driven timelines.
  • Sustained pricing power, especially in accounts where prescribing depends on guideline concordance and proven outcomes.

Investment posture

  • Underwrite on patent life and litigation milestones.
  • Value is driven by probability-weighted exclusivity windows rather than on broad market growth assumptions.

What are the core investment KPIs to underwrite for PERIOCHIP?

For an established local antiseptic device, the most decision-relevant KPIs are:

Commercial

  • Prescription or procedure attachment rate: share of periodontal visits where PERIOCHIP is used as adjunct.
  • Net price realization: account-level rebates and distribution economics.
  • Channel mix: hospital vs specialty clinic vs retail referral patterns.
  • Formulary inclusion: payer and institutional uptake.

Clinical and positioning

  • Guideline alignment: whether clinical pathways still recommend local antiseptics as adjunct after scaling and root planing.
  • Real-world effectiveness retention: continuation rates and re-treatment patterns.

Operational

  • Gross margin stability: device COGS, yield, and packaging costs.
  • Supply continuity: risk of manufacturing deviations and logistics disruptions.

IP and legal

  • Claim scope vs design-around likelihood: whether follow-on devices can meet the same functional claims with different carriers or regimens.
  • Litigation posture: enforcement actions, opposition/review outcomes (if any), and settlement dynamics.

How should investors frame the competitive map for periodontal adjunct devices?

PERIOCHIP competes within the periodontal adjunct ecosystem. The investment-relevant competitive question is not “are there other chlorhexidine products,” but:

  • Do competitors offer a similar adjunct within the same care pathway (scaling and root planing followed by local therapy)?
  • Can competitors match the device’s clinical rationale (time-release local antisepsis) and practical use (clinic workflow, ease of application)?
  • Are competitor claims broad enough to constrain PERIOCHIP’s exclusivity through competitive legal filings?

In most periodontal device markets, competition accelerates when:

  • clinical guidelines accept multiple adjunct options,
  • follow-on device manufacturers can replicate the delivery concept,
  • and payers move toward best-price contracts.

What is the highest-signal thesis for PERIOCHIP fundamentals?

A credible fundamentals thesis for PERIOCHIP rests on a narrow set of assertions investors can underwrite:

  • Demand is procedure-linked: it rises with periodontal treatment volumes and clinician behavior.
  • Value is anchored in local delivery: device format reduces systemic exposure and supports adjunct positioning.
  • Exclusivity is likely limited to non-active IP: investors should underwrite device/formulation and method-of-use claims, not chlorhexidine itself.

That thesis is sensitive to two variables:

  1. How long enforceable IP blocks “essentially equivalent” local chlorhexidine devices.
  2. How quickly prescribers and payers shift to substitute adjuncts once exclusivity weakens.

What are the specific diligence actions an investor would run (IP and commercialization)?

IP diligence (must-have)

  • Claim charting against the competitive “follow-on device” design patterns:
    • carrier materials,
    • release kinetics and loading,
    • dosing schedule after scaling and root planing,
    • application method and insertion geometry.
  • Jurisdiction mapping:
    • where method-of-use claims are enforceable,
    • where formulation/device claims survive,
    • where regulatory exclusivity applies (if any).

Commercial diligence (must-have)

  • Current utilization by geography and provider type.
  • Contracting terms:
    • distributor margins,
    • rebate structures,
    • institutional formularies.
  • Evidence strength:
    • whether current prescribing is based on older pivotal studies or newer head-to-head data.

Investment scenario: bull, base, bear (structured to IP and substitution)

Bull case: “Exclusivity holds, and replacement is slow”

  • Follow-on devices face sustained claim barriers.
  • Prescribers keep using PERIOCHIP due to protocol inertia and payer acceptance.
  • Net price erosion is limited by contracts and differentiated clinical positioning.

Key underwrites

  • Longer enforceable remaining patent life.
  • Lower probability of successful design-around.
  • Demonstrated persistence in real-world use.

Base case: “Exclusivity erodes gradually”

  • Some substitutes gain share as claims expire or weaken.
  • Price pressure increases, but total adjunct market holds because local therapy remains standard adjunct practice.
  • Revenue declines track both volume and price, but manufacturing margins remain stable.

Key underwrites

  • Partial protection through remaining method claims.
  • Competitive entry timing is staggered across jurisdictions.
  • Supply and distribution remain optimized.

Bear case: “Fast substitution after a clear IP event”

  • Competitors launch on expiry, with claims carved out through design-around.
  • Formularies switch to lowest-cost equivalents.
  • Revenue declines accelerate due to both price and volume displacement.

Key underwrites

  • Short remaining enforceable IP.
  • High design-around feasibility.
  • Rapid payer switching and clinician adoption of substitutes.

Key Takeaways

  • PERIOCHIP’s investment fundamentals are anchored in a procedure-linked periodontal adjunct model and a device-based local antiseptic proposition.
  • Chlorhexidine itself is unlikely to be the valuation driver; the decision variable is enforceable IP in device/formulation and method-of-use claims.
  • Underwrite commercialization through utilization attachment rate, net price realization, and payer/institution contracting.
  • Build the investment case around substitution speed after any IP weakening event, not around broad periodontal market growth alone.

FAQs

  1. What is PERIOCHIP’s key revenue durability driver?
    Procedure-adjacent utilization as an adjunct to scaling and root planing, supported by device-based local antisepsis.

  2. Which IP layer most likely determines PERIOCHIP’s exclusivity?
    Method-of-use and device/formulation claims that constrain follow-on designs, not composition-of-matter protection on chlorhexidine.

  3. What substitution risk should investors model?
    Follow-on local chlorhexidine devices and alternative periodontal adjuncts that can replicate local antiseptic delivery within the same clinical workflow.

  4. Which commercial KPI best signals resilience?
    Attachment rate of PERIOCHIP to periodontal procedures, plus net price realization after rebates and institutional contracting.

  5. How should investors structure bull vs bear cases?
    Bull: exclusivity holds and replacement is slow. Bear: a clear IP event triggers rapid launch and payer-driven switching.

References

[1] European Medicines Agency (EMA). PERIOCHIP product information and public assessment documents (when applicable).
[2] US Food and Drug Administration (FDA). Device/drug product listings and labeling for chlorhexidine periodontal products (when applicable).
[3] World Intellectual Property Organization (WIPO). PATENTSCOPE records for chlorhexidine periodontal device formulations and methods of use (when applicable).
[4] Espacenet (EPO). Patent family searching for PERIOCHIP-related device/formulation/method-of-use claims (when applicable).

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