---
title: "PPH in Japan: How Foreign Applicants Save 50%+ on Patent Examination"
description: Complete guide to Patent Prosecution Highway (PPH) in Japan for foreign counsel. Eligibility, application procedure, cost savings, grant statistics, and...
image: https://www.evorix.jp/hubfs/AI-Generated%20Media/Images/The%20image%20depicts%20a%20modern%20office%20setting%20with%20sleek%20minimalistic%20furniture%20A%20large%20glass%20window%20allows%20natural%20light%20to%20flood%20the%20space%20casting%20soft%20shadows%20on%20the%20polished%20wooden%20floor%20In%20the%20foreground%20a%20contemporary%20desk%20is%20adorned%20with%20a%20laptop.jpeg
---

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 2026/05/23

# PPH in Japan: How Foreign Applicants Save 50%+ on Patent Examination

![Picture of 弁理士 杉浦健文](https://www.evorix.jp/hs-fs/hubfs/top-profile-pic-sugiura-1.jpg?width=50&name=top-profile-pic-sugiura-1.jpg)  弁理士 杉浦健文

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For foreign applicants with corresponding patent applications already allowed in major IP offices (USPTO, EPO, KIPO, CNIPA, etc.), the Patent Prosecution Highway (PPH) at the Japan Patent Office (JPO) is the single most effective tool to accelerate examination, reduce Office Actions, and dramatically increase grant success rate. This guide explains how foreign counsel can leverage PPH at JPO to save time and money.

Key Takeaways

- PPH allows accelerated examination at JPO when corresponding foreign claims are allowed
- Average time to first Office Action: **3 months** with PPH vs **12–18 months** standard
- Grant rate with PPH: **~80%+**, compared to ~60% standard
- **No JPO surcharge** for PPH request — only attorney fee
- Global PPH, PCT-PPH, and bilateral PPH agreements with 50+ countries
- Strategic value: deflects routine rejections, reduces OA cycles, predictable timeline
- Application can be filed at examination request or after

### Table of Contents

1. [What is PPH at JPO](https://www.evorix.jp/en/blog/pph-japan-foreign-applicants#s1)
2. [PPH Variants Available in Japan](https://www.evorix.jp/en/blog/pph-japan-foreign-applicants#s2)
3. [Eligibility Requirements](https://www.evorix.jp/en/blog/pph-japan-foreign-applicants#s3)
4. [Application Procedure](https://www.evorix.jp/en/blog/pph-japan-foreign-applicants#s4)
5. [Required Documents](https://www.evorix.jp/en/blog/pph-japan-foreign-applicants#s5)
6. [PPH Grant Statistics](https://www.evorix.jp/en/blog/pph-japan-foreign-applicants#s6)
7. [Time Savings: Standard vs PPH](https://www.evorix.jp/en/blog/pph-japan-foreign-applicants#s7)
8. [Cost Comparison](https://www.evorix.jp/en/blog/pph-japan-foreign-applicants#s8)
9. [Strategic Use Cases](https://www.evorix.jp/en/blog/pph-japan-foreign-applicants#s9)
10. [When NOT to Use PPH](https://www.evorix.jp/en/blog/pph-japan-foreign-applicants#s10)

## 1. What is PPH at JPO

Patent Prosecution Highway (PPH) is a bilateral or multilateral framework where the JPO accelerates examination of a Japanese patent application based on the favorable examination result of a corresponding foreign application. In essence, JPO leverages the work of the foreign office, allowing the Japanese examination to proceed faster and with higher predictability.

PPH is **free** — no JPO fee. The applicant must align Japanese claims with the allowed foreign claims (often called "PPH-aligned claims").

## 2. PPH Variants Available in Japan

| Variant | Description | Typical Use |
| --- | --- | --- |
| **Global PPH** | Multilateral PPH framework covering 30+ countries | When you have allowance in any Global PPH partner |
| **IP5 PPH** | PPH among USPTO, EPO, JPO, KIPO, CNIPA | IP5 office allowance |
| **Bilateral PPH** | Country-specific agreements (e.g., JPO-USPTO) | Bilateral allowance |
| **PCT-PPH** | Based on positive PCT international preliminary examination | PCT-IPRP/IPER positive opinion |
| **PPH MOTTAINAI** | JPO-specific: claims can be based on any work product, even by a different office | When the original allowance was earlier than Japan filing |

## 3. Eligibility Requirements

To file PPH at JPO, the following conditions must be met:

**1. Corresponding application**: The Japanese application and the foreign reference application must share the earliest priority date (Paris Convention or PCT).

**2. Allowed claims**: At least one claim in the reference application must be indicated as patentable by the foreign Office (or PCT IPRP/IPER positive opinion).

**3. Claim correspondence**: All claims in the Japanese application subject to examination must "sufficiently correspond" to the allowable foreign claims. This typically means same scope or narrower.

**4. Examination not yet started**: PPH must be requested before JPO substantive examination has begun (i.e., before the first Office Action).

## 4. Application Procedure

PPH filing at JPO involves:

Step 1: File examination request (if not already done)

Step 2: Submit PPH application form (Form 11)

Step 3: Attach: (a) claims comparison table showing correspondence, (b) copies of foreign office actions and allowance, (c) copies of allowed foreign claims, (d) translations of non-Japanese references

Step 4: JPO reviews PPH eligibility within ~1 month

Step 5: If approved, examination is accelerated — first OA typically within 2–3 months

## 5. Required Documents

| Document | Source | Notes |
| --- | --- | --- |
| PPH application form | JPO Form 11 | Filed by Japanese benrishi |
| Claims correspondence table | Prepared by counsel | Maps JP claims ↔ allowed FR claims |
| Office Actions from reference office | USPTO/EPO/etc. | All OAs including final allowance |
| Allowed claims of reference application | USPTO/EPO/etc. | Cleanest copy after allowance |
| Translations of non-EN/JP documents | Counsel | Japanese translation required if original is not JP/EN |

## 6. PPH Grant Statistics

JPO publishes PPH statistics regularly. Key figures:

**Grant rate (PPH cases)**: 81% — significantly higher than 67% for standard examination

**First OA timing**: Average 2.8 months from PPH approval (vs 12–18 months standard)

**Number of OAs to grant**: 1.2 average (vs 1.8 standard)

**Total time to grant from PPH**: ~10 months (vs 24–48 months standard)

## 7. Time Savings: Standard vs PPH

| Phase | Standard | With PPH |
| --- | --- | --- |
| Examination request to first OA | 12–18 months | **2–3 months** |
| Number of OAs | 1.8 average | **1.2 average** |
| Response time per OA | 3 months | 3 months |
| **Total time to grant** | **24–48 months** | **~10 months** |
| Time saved | — | **14–38 months** |

## 8. Cost Comparison

PPH itself is free at JPO. The cost difference is in attorney fees due to reduced OA cycles:

| Item | Standard (USD) | With PPH (USD) |
| --- | --- | --- |
| Examination request | $1,320 | $1,320 |
| PPH filing (attorney fee) | — | $400–600 |
| Office Action responses (avg) | $1,440 (1.8 OAs) | $960 (1.2 OAs) |
| Grant registration | $540 | $540 |
| **Total prosecution cost** | **$3,300** | **$3,220–3,420** |
| **Time-value savings** | — | **Significant (faster grant = earlier enforcement)** |

**Real value beyond fees**: PPH does not always save direct cost. The real value is **faster grant**, which means earlier enforcement, earlier licensing revenue, and lower applicant uncertainty.

## 9. Strategic Use Cases

**Case 1: SEP / standards-essential patents** — Earlier grant accelerates licensing leverage.

**Case 2: Litigation deterrence** — Granted patent enables infringement assertions before competitors enter the market.

**Case 3: M&A and licensing deals** — Granted patents are valued higher in due diligence.

**Case 4: Time-sensitive technology (e.g., fast-moving IT, biotech)** — Standard 3-4 year examination would let market opportunity expire.

## 10. When NOT to Use PPH

PPH is not always optimal. Avoid PPH when:

**1. Foreign claims are too narrow.** If your foreign reference has only narrow allowed claims, PPH forces you to mirror them. You may prefer to fight for broader claims through standard examination.

**2. Application is in early portfolio stage.** If you may abandon, accelerated examination wastes effort.

**3. JP claims and foreign claims diverge substantially.** Claim correspondence requirements may not be satisfied.

**4. Strategic delay desired.** Sometimes slow examination preserves continuation/divisional options.

## Frequently Asked Questions

Q. Does PPH guarantee grant?

A. No. PPH accelerates examination but JPO conducts an independent substantive review. However, statistically PPH applications have 81% grant rate vs 67% for standard.

Q. Can I file PPH after the first JPO Office Action?

A. No. PPH must be filed before substantive examination begins. After the first OA, you can no longer file PPH.

Q. What if my foreign allowed claims are broader than my JP claims?

A. No problem. The JP claims must be "sufficiently corresponding" — same scope or narrower than allowed foreign claims. Narrower JP claims are perfectly acceptable.

Q. Can I use multiple foreign references for PPH?

A. Yes. Under Global PPH and PPH MOTTAINAI, you can rely on allowance from any partner office, even multiple sources.

Q. What is the cost of filing PPH at JPO?

A. JPO charges no fee for PPH. Attorney fees for preparing the correspondence table and filing range USD 400–600.

Q. Does PCT-PPH work if my PCT search was negative?

A. PCT-PPH requires a positive IPRP (international preliminary examination report). A negative search report alone is not sufficient.

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### Want to Accelerate Your Japan Examination via PPH?

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---

 

Copyright © 2026, Intellectual Property Law Firm EVORIX® All rights reserved. 

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  "dateModified" : "2026-05-23T07:46:18.326Z",
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  "headline" : "PPH in Japan: How Foreign Applicants Save 50%+ on Patent Examination",
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      "text" : "No. PPH accelerates examination but JPO conducts an independent substantive review. However, statistically PPH applications have 81% grant rate vs 67% for standard."
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    "name" : "Does PPH guarantee grant?"
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    "@type" : "Question",
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    "@type" : "Question",
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      "text" : "No problem. The JP claims must be \"sufficiently corresponding\" — same scope or narrower than allowed foreign claims. Narrower JP claims are perfectly acceptable."
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    "name" : "What if my foreign allowed claims are broader than my JP claims?"
  }, {
    "@type" : "Question",
    "acceptedAnswer" : {
      "@type" : "Answer",
      "text" : "Yes. Under Global PPH and PPH MOTTAINAI, you can rely on allowance from any partner office, even multiple sources."
    },
    "name" : "Can I use multiple foreign references for PPH?"
  }, {
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      "@type" : "Answer",
      "text" : "JPO charges no fee for PPH. Attorney fees for preparing the correspondence table and filing range USD 400–600."
    },
    "name" : "What is the cost of filing PPH at JPO?"
  }, {
    "@type" : "Question",
    "acceptedAnswer" : {
      "@type" : "Answer",
      "text" : "PCT-PPH requires a positive IPRP (international preliminary examination report). A negative search report alone is not sufficient."
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