MPEP § 1823.01 — Reference to Deposited Biological Material (Annotated Rules)

§1823.01 Reference to Deposited Biological Material

USPTO MPEP version: BlueIron's Update: 2025-12-31

This page consolidates and annotates all enforceable requirements under MPEP § 1823.01, including statutory authority, regulatory rules, examiner guidance, and practice notes. It is provided as guidance, with links to the ground truth sources. This is information only, it is not legal advice.

Reference to Deposited Biological Material

This section addresses Reference to Deposited Biological Material. Contains: 11 requirements, 1 prohibition, 1 guidance statement, 9 permissions, and 4 other statements.

Key Rules

Topic

Deposit of Biological Materials

11 rules
StatutoryRequiredAlways
[mpep-1823-01-1294297584da32c373880493]
Reference to Deposited Biological Material for All States Unless Specified Otherwise
Note:
A reference to deposited biological material is considered valid for all designated states unless it is specifically limited to certain states.

(a) A reference to deposited biological material shall be considered to be made for the purposes of all designated States, unless it is expressly made for the purposes of certain of the designated States only; the same applies to the indications included in the reference.

Jump to MPEP SourceDeposit of Biological Materials
StatutoryPermittedAlways
[mpep-1823-01-e0febaabf8e05fe664982e7a]
Different Deposits of Biological Material for Different Designated States Required
Note:
The rule requires that references to different deposits of biological material may be made for different designated states, ensuring proper depositary institutions are notified.

(b) References to different deposits of the biological material may be made for different designated States.

Jump to MPEP SourceDeposit of Biological Materials
StatutoryPermittedAlways
[mpep-1823-01-a80a67ce924a4442df590afb]
National Office Must Notify International Bureau of Deposit Requirements
Note:
The national office must notify the international bureau about any additional deposit requirements for biological materials beyond those specified in Rule 13bis.3(a).
(a) Any national Office may notify the International Bureau of any requirement of the national law:
  • (i) that any matter specified in the notification, in addition to those referred to in Rule 13bis.3(a)(i), (ii) and (iii), is required to be included in a reference to deposited biological material in a national application;
  • (ii) that one or more of the indications referred to in Rule 13bis.3(a) are required to be included in a national application as filed or are required to be furnished at a time specified in the notification which is earlier than 16 months from the priority date.
Jump to MPEP SourceDeposit of Biological Materials
StatutoryRequiredAlways
[mpep-1823-01-a9b0ce06c3d73e1142e8a7b7]
Deposit Requirement for PCT References
Note:
A reference to deposited biological material made in accordance with PCT requirements must be regarded as satisfying national law requirements for such references and the time for furnishing them.

A reference to a deposited biological material made in accordance with the requirements of the PCT must be regarded by each of the designated Offices as satisfying the requirements of the national law applicable in that Office with regard to the contents of such references and the time for furnishing them.

Jump to MPEP SourceDeposit of Biological MaterialsPatent Cooperation Treaty
StatutoryPermittedAlways
[mpep-1823-01-fb1ff77cf1394f5f86feb7af]
Reference for Designated States Only
Note:
A reference to deposited biological material can be made for all designated states or specific ones, unless otherwise stated.

A reference may be made for the purposes of all designated States or for one or only some of the designated States. A reference is considered to be made for the purpose of all designated States unless it is expressly made for certain designated States only. References to different deposits may be made for the purposes of different designated States.

Jump to MPEP SourceDeposit of Biological Materials
StatutoryInformativeAlways
[mpep-1823-01-7690f03cbf19f33b0aff0e77]
Reference to Deposited Biological Material for All States Unless Specified
Note:
A reference to deposited biological material is considered for all designated states unless specifically stated for certain states.

A reference may be made for the purposes of all designated States or for one or only some of the designated States. A reference is considered to be made for the purpose of all designated States unless it is expressly made for certain designated States only. References to different deposits may be made for the purposes of different designated States.

Jump to MPEP SourceDeposit of Biological Materials
StatutoryPermittedAlways
[mpep-1823-01-b864512c8b3420f86b221c47]
Different Deposits for Different States Required
Note:
A reference to deposited biological material can be made specifically for one or multiple designated states, depending on the purpose.

A reference may be made for the purposes of all designated States or for one or only some of the designated States. A reference is considered to be made for the purpose of all designated States unless it is expressly made for certain designated States only. References to different deposits may be made for the purposes of different designated States.

Jump to MPEP SourceDeposit of Biological Materials
StatutoryProhibitedAlways
[mpep-1823-01-f4994c9daed7038fd40d9743]
Notification of Deposit Required for Acceptance
Note:
Applicants must notify the designated Office of their deposit with a notified institution to ensure acceptance, as per PCT Gazette or Annex L.

A reference to a deposit cannot be disregarded by a designated Office for reasons pertaining to the institution with which the biological material was deposited if the deposit referred to is one made with a depositary institution notified by that Office. Thus, by consulting the PCT Gazette or Annex L of the PCT Applicant’s Guide, the applicant can be sure that he has deposited the biological material with an institution which will be accepted by the designated Office.

Jump to MPEP SourceDeposit of Biological MaterialsPatent Cooperation Treaty
MPEP GuidanceRequiredAlways
[mpep-1823-01-118282db670b6eb1ff8683bd]
Reference to Deposited Biological Materials Must Satisfy National Law
Note:
Any reference to deposited biological material must comply with this rule and will be considered as meeting the national law requirements of each designated state.

Any reference to deposited biological material shall be made in accordance with this Rule and, if so made, shall be considered as satisfying the requirements of the national law of each designated State.

Jump to MPEP SourceDeposit of Biological Materials
MPEP GuidanceRequiredAlways
[mpep-1823-01-e05520c428b5f2d3d0895fa9]
Deposited Biological Material Must Include Specific Information
Note:
A reference to deposited biological material must include the name and address of the depositary institution, the date of deposit, the accession number, and any additional information notified by the International Bureau.
(a) A reference to deposited biological material shall indicate:
  • (i) the name and the address of the depositary institution with which the deposit was made;
  • (ii) the date of deposit of the biological material with that institution;
  • (iii) the accession number given to the deposit by that institution; and
  • (iv) any additional matter of which the International Bureau has been notified pursuant to Rule 13 bis.7(a)(i), provided that the requirement to indicate that matter was published in the Gazette in accordance with Rule 13bis.7(c) at least two months before the filing of the international application.
  • (b) Failure to include a reference to deposited biological material or failure to include, in a reference to deposited biological material, an indication in accordance with paragraph (a), shall have no consequence in any designated State whose national law does not require such reference or such indication in a national application.
Jump to MPEP SourceDeposit of Biological MaterialsDeposit Identification in ApplicationArticle 19 Amendment Scope
MPEP GuidanceRequiredAlways
[mpep-1823-01-03d6820eae624ce8edb5b975]
Failure to Include Deposit Reference Has No Consequence in Designated States Without Such Requirement
Note:
If a reference to deposited biological material is missing or improperly indicated, it will have no consequence in designated states that do not require such references or indications.

(a) A reference to deposited biological material shall indicate:

(b) Failure to include a reference to deposited biological material or failure to include, in a reference to deposited biological material, an indication in accordance with paragraph (a), shall have no consequence in any designated State whose national law does not require such reference or such indication in a national application.

Jump to MPEP SourceDeposit of Biological Materials
Topic

Article 19 Amendment Scope

9 rules
StatutoryRequiredAlways
[mpep-1823-01-788ae28d7fa9862b076e2586]
International Bureau Must Notify Applicant of Received Indication
Note:
The International Bureau must inform the applicant about the date it received an indication provided under paragraph (a), and publish or notify relevant data accordingly.
(d) The International Bureau shall notify the applicant of the date on which it received any indication furnished under paragraph (a), and:
  • (i) if the indication was received before the technical preparations for international publication have been completed, publish the indication furnished under paragraph (a), and an indication of the date of receipt, together with the international application;
  • (ii) if the indication was received after the technical preparations for international publication have been completed, notify that date and the relevant data from the indication to the designated Offices.
Jump to MPEP SourceArticle 19 Amendment ScopePCT Article 19 AmendmentsArticle 19 Amendment Timing
StatutoryRecommendedAlways
[mpep-1823-01-421c43a9f1c299399b897053]
Indications for Deposited Biological Material Must Be Provided Within Timeframes
Note:
Applicants must provide indications for deposited biological material within 16 months of the priority date unless national laws require earlier, and all indications must be furnished before requesting early publication.

If any indication is not included in a reference to a deposited biological material contained in the international application as filed, it may be furnished to the International Bureau within 16 months after the priority date unless the International Bureau has been notified (and, at least 2 months prior to the filing of the international application, it has published in the PCT Gazette) that the national law requires the indication to be furnished earlier. However, if the applicant makes a request for early publication, all indications should be furnished by the time the request is made, since any designated Office may regard any indication not furnished when the request is made as not having been furnished in time.

Jump to MPEP SourceArticle 19 Amendment ScopeNationals and ResidentsReceiving Office (RO/US)
StatutoryInformativeAlways
[mpep-1823-01-7e37fdf71694122420d27f6c]
Notifications for Unfiled Biological Material Indications
Note:
The International Bureau notifies designated offices and publishes the dates when indications about deposited biological material, not included in the application, were provided.

No check is made in the international phase to determine whether a reference has been furnished within the prescribed time limit. However, the International Bureau notifies the designated Offices of the date(s) on which indications, not included in the international application as filed, were furnished to it. Those dates are also mentioned in the publication of the international application. Failure to include a reference to a deposited biological material (or any indication required in such a reference) in the international application as filed, or failure to furnish it (or the indication) within the prescribed time limit, has no consequence if the national law does not require the reference (or indication) to be furnished in a national application. Where there is a consequence, it is the same as that which applies under the national law.

Jump to MPEP SourceArticle 19 Amendment ScopeArticle 19 Amendment TimingPCT Article 19 Amendments
StatutoryRequiredAlways
[mpep-1823-01-49d90bc15f0c1fc39010b954]
Optional Sheet Must Be Enclosed With Letter
Note:
If the optional sheet with biological material indications is submitted later, it must be sent with a letter.

To the extent that indications relating to the deposit of a biological material are not given in the description, because they are furnished later, they may be given in the “optional sheet” provided for that purpose. If the sheet is submitted when the international application is filed, a reference to it should be made in the check list contained on the last sheet of the Request form. Should certain States be designated, e.g., Israel, Japan, Korea, Mexico, or Turkey, such a sheet must, if used, be included as one of the sheets of the description at the time of filing; otherwise the indications given in it will not be taken into account by the respective patent offices of those designated States in the national phase. Requirements of the various Offices are set forth in Annex L of the PCT Applicant’s Guide, available online at www.wipo.int/pct/en/appguide. If the sheet is furnished to the International Bureau later, it must be enclosed with a letter.

Jump to MPEP SourceArticle 19 Amendment ScopePCT Article 19 AmendmentsPCT Description Requirements
StatutoryPermittedAlways
[mpep-1823-01-efab963427f71dcb5f3ada85]
Notification Requirement for Sample Requests by Authorities
Note:
International Searching and Examining Authorities must notify the International Bureau to request samples of deposited biological material, which is published in the PCT Gazette.

International Searching Authorities and International Preliminary Examining Authorities are not expected to request access to deposited biological material. However, in order to retain the possibility of access to a deposited biological material referred to in an international application which is being searched or examined by such an Authority, the PCT provides that the Authorities may, if they fulfill certain conditions, ask for samples. Thus, an Authority may only ask for samples if it has notified the International Bureau (in a general notification) that it may require samples and the International Bureau has published the notification in the PCT Gazette. The only Authority which has made such a notification (and thus the only Authority which may request samples) is the Japan Patent Office. If a sample is asked for, the request is directed to the applicant, who then becomes responsible for making the necessary arrangements for the sample to be provided.

Jump to MPEP SourceArticle 19 Amendment ScopeRequest Content and FormPCT Article 19 Amendments
MPEP GuidanceInformativeAlways
[mpep-1823-01-f8d3c2d9f28b45cb26f6aafa]
Notification of Additional Matter for Deposited Biological Material
Note:
Indicate any additional matter notified by the International Bureau, provided it was published in the Gazette at least two months before filing.

(a) A reference to deposited biological material shall indicate:

(iv) any additional matter of which the International Bureau has been notified pursuant to Rule 13 bis.7(a)(i), provided that the requirement to indicate that matter was published in the Gazette in accordance with Rule 13bis.7(c) at least two months before the filing of the international application.

Jump to MPEP SourceArticle 19 Amendment ScopeArticle 19 Amendment TimingPCT Article 19 Amendments
MPEP GuidanceRequiredAlways
[mpep-1823-01-ad15a187a9fe77d9e32d778b]
Deposit Indication Requirement After Filing
Note:
If a deposit indication is not included in the initial filing but is provided to the International Bureau within 16 months from the priority date, it will be considered timely. If after 16 months, it must reach before publication.
(a) Subject to paragraphs (b) and (c), if any of the indications referred to in Rule 13 bis.3(a) is not included in a reference to deposited biological material in the international application as filed but is furnished to the International Bureau:
  • (i) within 16 months from the priority date, the indication shall be considered by any designated Office to have been furnished in time;
  • (ii) after the expiration of 16 months from the priority date, the indication shall be considered by any designated Office to have been furnished on the last day of that time limit if it reaches the International Bureau before the technical preparations for international publication have been completed.
Jump to MPEP SourceArticle 19 Amendment ScopePCT Article 19 AmendmentsPatent Cooperation Treaty
MPEP GuidanceRequiredAlways
[mpep-1823-01-32406aed5551eed487f7c896]
Indication Considered if Received Before Publication
Note:
If an indication is not included in the initial application but is provided to the International Bureau after 16 months from the priority date, it will be considered as received on the last day of that period if it arrives before publication preparations are complete.

(a) Subject to paragraphs (b) and (c), if any of the indications referred to in Rule 13 bis.3(a) is not included in a reference to deposited biological material in the international application as filed but is furnished to the International Bureau:

(ii) after the expiration of 16 months from the priority date, the indication shall be considered by any designated Office to have been furnished on the last day of that time limit if it reaches the International Bureau before the technical preparations for international publication have been completed.

Jump to MPEP SourceArticle 19 Amendment ScopeArticle 19 Amendment TimingPublication Language
MPEP GuidancePermittedAlways
[mpep-1823-01-b136a21a5d2cfbab3ee68f10]
Early Filing Requirements for Indications
Note:
A designated Office may require certain indications to be provided earlier than 16 months from the priority date, but must notify the International Bureau and publish this requirement at least two months before filing.

(b) If the national law applicable by a designated Office so requires in respect of national applications, that Office may require that any of the indications referred to in Rule 13bis.3(a) be furnished earlier than 16 months from the priority date, provided that the International Bureau has been notified of such requirement pursuant to Rule 13bis.7(a)(ii) and has published such requirement in the Gazette in accordance with Rule 13bis.7(c) at least two months before the filing of the international application.

Jump to MPEP SourceArticle 19 Amendment ScopeArticle 19 Amendment TimingNationals and Residents
Topic

PCT Description Requirements

6 rules
StatutoryRequiredAlways
[mpep-1823-01-d288ca58a8d2b35e7b97ede1]
Indication for Deposited Biological Material on Separate Sheet
Note:
The rule requires that any indication regarding deposited biological material not in the description be provided on a separate sheet, preferably Form PCT/RO/134, and attached to the request if furnished at the time of filing.

(a) To the extent that any indication with respect to deposited biological material is not contained in the description, it may be given on a separate sheet. Where any such indication is so given, it shall preferably be on Form PCT/RO/134 and, if furnished at the time of filing, the said Form shall, subject to paragraph (b), preferably be attached to the request and referred to in the check list referred to in Rule 3.3(a)(ii).

Jump to MPEP SourcePCT Description RequirementsRequest Content and FormPCT Description and Claims
StatutoryRequiredAlways
[mpep-1823-01-e8a2695844e1fddd23a7642c]
Reference to Deposited Biological Material Optional
Note:
The PCT does not require including a reference to biological material and its deposit, but such a reference may be needed if the invention involves unavailable biological material as required by at least one designated State.

The PCT does not require the inclusion of a reference to a biological material and/or to its deposit with a depositary institution in an international application; it merely prescribes the contents of any “reference to deposited biological material” (defined as “particulars given… with respect to the deposit of biological material… or to the biological material so deposited”) which is included in an international application, and when such a reference must be furnished. It follows that the applicant may see a need to make such a reference only when it is required for the purpose of disclosing the invention claimed in the international application in a manner sufficient for the invention to be carried out by a person skilled in the art that is, when the law of at least one of the designated States provides for the making, for this purpose, of a reference to a deposited biological material if the invention involves the use of a biological material that is not available to the public. Any reference to a deposited biological material furnished separately from the description will be included in the publication of the international application.

Jump to MPEP SourcePCT Description RequirementsPatent Cooperation TreatyPublication Language
StatutoryInformativeAlways
[mpep-1823-01-e6f908e468c4254a8ae5a14e]
Reference to Deposited Biological Material Must Be Included in Publication
Note:
Any reference to a deposited biological material that is furnished separately from the description must be included in the publication of the international application.

The PCT does not require the inclusion of a reference to a biological material and/or to its deposit with a depositary institution in an international application; it merely prescribes the contents of any “reference to deposited biological material” (defined as “particulars given… with respect to the deposit of biological material… or to the biological material so deposited”) which is included in an international application, and when such a reference must be furnished. It follows that the applicant may see a need to make such a reference only when it is required for the purpose of disclosing the invention claimed in the international application in a manner sufficient for the invention to be carried out by a person skilled in the art that is, when the law of at least one of the designated States provides for the making, for this purpose, of a reference to a deposited biological material if the invention involves the use of a biological material that is not available to the public. Any reference to a deposited biological material furnished separately from the description will be included in the publication of the international application.

Jump to MPEP SourcePCT Description RequirementsPublication LanguagePCT Description and Claims
StatutoryRequiredAlways
[mpep-1823-01-3752c6e4cf4de91f80a4ee6a]
Description of Biological Material Required for Designated Offices
Note:
An indication of the biological material's characteristics must be provided in international applications designated to a national or regional Office that requires such information, as long as the requirement is published in the PCT Gazette.

The national laws of some of the national (or regional) Offices require that, besides indications concerning the deposit of a biological material, an indication be given concerning the biological material itself, such as, for example, a short description of its characteristics, at least to the extent that this information is available to the applicant. These requirements must be met in the case of international applications for which any such Office is a designated Office, provided that the requirements have been published in the PCT Gazette. Annex L of the PCT Applicant’s Guide indicates, for each of the national (or regional) Offices, the requirements (if any) of this kind which have been published.

Jump to MPEP SourcePCT Description RequirementsPCT Description and ClaimsPatent Cooperation Treaty
StatutoryPermittedAlways
[mpep-1823-01-baa1fc828ccee19c63882b24]
Optional Deposit Sheet for Biological Material
Note:
Allows deposit indications not in the description to be provided on an optional sheet, which must be included at filing if designated States are chosen.

To the extent that indications relating to the deposit of a biological material are not given in the description, because they are furnished later, they may be given in the “optional sheet” provided for that purpose. If the sheet is submitted when the international application is filed, a reference to it should be made in the check list contained on the last sheet of the Request form. Should certain States be designated, e.g., Israel, Japan, Korea, Mexico, or Turkey, such a sheet must, if used, be included as one of the sheets of the description at the time of filing; otherwise the indications given in it will not be taken into account by the respective patent offices of those designated States in the national phase. Requirements of the various Offices are set forth in Annex L of the PCT Applicant’s Guide, available online at www.wipo.int/pct/en/appguide. If the sheet is furnished to the International Bureau later, it must be enclosed with a letter.

Jump to MPEP SourcePCT Description RequirementsPCT Description and ClaimsArticle 19 Amendment Scope
StatutoryRequiredAlways
[mpep-1823-01-e7daa90b2f3b993b629458e7]
Application Data Sheet Required for Filing When Designating Certain States
Note:
If a sheet with indications about deposited biological material is submitted at filing and certain states are designated, it must be included in the description; otherwise, those states’ patent offices will not consider its contents.

To the extent that indications relating to the deposit of a biological material are not given in the description, because they are furnished later, they may be given in the “optional sheet” provided for that purpose. If the sheet is submitted when the international application is filed, a reference to it should be made in the check list contained on the last sheet of the Request form. Should certain States be designated, e.g., Israel, Japan, Korea, Mexico, or Turkey, such a sheet must, if used, be included as one of the sheets of the description at the time of filing; otherwise the indications given in it will not be taken into account by the respective patent offices of those designated States in the national phase. Requirements of the various Offices are set forth in Annex L of the PCT Applicant’s Guide, available online at www.wipo.int/pct/en/appguide. If the sheet is furnished to the International Bureau later, it must be enclosed with a letter.

Jump to MPEP SourcePCT Description RequirementsNationals and ResidentsReceiving Office (RO/US)
Topic

Nationals and Residents

4 rules
StatutoryRequiredAlways
[mpep-1823-01-fac81949ab0b1b84a76ecc92]
Samples May Be Provided After International Publication But Before National Processing
Note:
This rule permits the furnishing of deposited biological material samples after international publication but before national processing, provided certain conditions are met.

Pursuant to Articles 23 and 40, no furnishing of samples of the deposited biological material to which a reference is made in an international application shall, except with the authorization of the applicant, take place before the expiration of the applicable time limits after which national processing may start under the said Articles. However, where the applicant performs the acts referred to in Articles 22 or 39 after international publication but before the expiration of the said time limits, the furnishing of samples of the deposited biological material may take place, once the said acts have been performed. Notwithstanding the previous provision, the furnishing of samples of the deposited biological material may take place under the national law applicable by any designated Office as soon as, under that law, the international publication has the effects of the compulsory national publication of an unexamined national application.

Jump to MPEP SourceNationals and ResidentsReceiving Office (RO/US)Publication Language
StatutoryPermittedAlways
[mpep-1823-01-05644f2462a0a30193eaeb87]
Indications for Deposited Biological Material Required
Note:
The rule requires providing specific indications regarding the deposit of biological material, including those specified in PCT Regulations and additional national or regional Office requirements published in the PCT Gazette.
There are two kinds of indication which may have to be given with regard to the deposit of the biological material, namely:
  • (A) indications specified in the PCT Regulations themselves; and
  • (B) additional indications by the national (or regional) Office of (or acting for) a State designated in the international application and which have been published in the PCT Gazette; these additional indications may relate not only to the deposit of the biological material but also to the biological material itself.
Jump to MPEP SourceNationals and ResidentsReceiving Office (RO/US)PCT International Application Filing
StatutoryPermittedAlways
[mpep-1823-01-5bd4edd2a6724bc687b69087]
Additional Indications by National Offices for Deposited Biological Material
Note:
This rule requires additional indications from national offices regarding the deposit and characteristics of biological material, which must be published in the PCT Gazette.

There are two kinds of indication which may have to be given with regard to the deposit of the biological material, namely:

(B) additional indications by the national (or regional) Office of (or acting for) a State designated in the international application and which have been published in the PCT Gazette; these additional indications may relate not only to the deposit of the biological material but also to the biological material itself.

Jump to MPEP SourceNationals and ResidentsReceiving Office (RO/US)PCT International Application Filing
StatutoryInformativeAlways
[mpep-1823-01-0f326ab3d87483ec4072d1d9]
Requirement for National Phase Entry Before Sample Filing
Note:
The applicant must take steps to enter the national phase before a designated Office after international publication of an international application to delay sample furnishing until the start of the national phase.

The furnishing of samples of a deposit of a biological material to third persons is governed by the national laws applicable in the designated Offices. PCT Rule 13bis.6(b), however, provides for the delaying of any furnishing of samples under the national law applicable in each of the designated (or elected) Offices until the start of the national phase, subject to the ending of this “delaying effect” brought about by the occurrence of either of the following two events (A) the applicant has, after international publication of the international application, taken the steps necessary to enter the national phase before the designated Office.

Jump to MPEP SourceNationals and ResidentsReceiving Office (RO/US)Publication Language
Topic

Effect of International Filing

3 rules
StatutoryPermittedAlways
[mpep-1823-01-e923dfe67915c9e315db6fb3]
Samples May Be Furnished After International Publication
Note:
Samples of deposited biological material may be furnished under the national law applicable by any designated Office once international publication has the effects of compulsory national publication.

Pursuant to Articles 23 and 40, no furnishing of samples of the deposited biological material to which a reference is made in an international application shall, except with the authorization of the applicant, take place before the expiration of the applicable time limits after which national processing may start under the said Articles. However, where the applicant performs the acts referred to in Articles 22 or 39 after international publication but before the expiration of the said time limits, the furnishing of samples of the deposited biological material may take place, once the said acts have been performed. Notwithstanding the previous provision, the furnishing of samples of the deposited biological material may take place under the national law applicable by any designated Office as soon as, under that law, the international publication has the effects of the compulsory national publication of an unexamined national application.

Jump to MPEP SourceEffect of International FilingNationals and ResidentsReceiving Office (RO/US)
StatutoryInformativeAlways
[mpep-1823-01-f5c37921004cfefb3f8de58f]
Delay of Sample Filing Until National Phase
Note:
PCT Rule allows delaying sample submission until the start of national phase, subject to certain conditions.
The furnishing of samples of a deposit of a biological material to third persons is governed by the national laws applicable in the designated Offices. PCT Rule 13bis.6(b), however, provides for the delaying of any furnishing of samples under the national law applicable in each of the designated (or elected) Offices until the start of the national phase, subject to the ending of this “delaying effect” brought about by the occurrence of either of the following two events:
  • (A) the applicant has, after international publication of the international application, taken the steps necessary to enter the national phase before the designated Office.
  • (B) international publication of the international application has been effected, and that publication has the same effects, under the national law applicable in the designated Office, as the compulsory national publication of an unexamined national application (in other words, the international application has qualified for the grant of “provisional protection”).
Jump to MPEP SourceEffect of International FilingNationals and ResidentsReceiving Office (RO/US)
StatutoryInformativeAlways
[mpep-1823-01-21622f33a873271e728861db]
International Publication Grants Provisional Protection
Note:
The international publication of an application provides the same provisional protection as a national publication, allowing for the delay in furnishing samples until the start of the national phase.

The furnishing of samples of a deposit of a biological material to third persons is governed by the national laws applicable in the designated Offices. PCT Rule 13bis.6(b), however, provides for the delaying of any furnishing of samples under the national law applicable in each of the designated (or elected) Offices until the start of the national phase, subject to the ending of this “delaying effect” brought about by the occurrence of either of the following two events:

(B) international publication of the international application has been effected, and that publication has the same effects, under the national law applicable in the designated Office, as the compulsory national publication of an unexamined national application (in other words, the international application has qualified for the grant of “provisional protection”).

Jump to MPEP SourceEffect of International FilingNationals and ResidentsReceiving Office (RO/US)
Topic

Period for Reply (37 CFR 1.134)

2 rules
StatutoryPermittedAlways
[mpep-1823-01-44de6c545e19b8ed40ad5dca]
Early Pub Req Not Met If Indic Not Furnished On Time
Note:
If an applicant requests early publication under Article 21(2)(b), any indication not provided before technical preparations for international publication are completed will be deemed untimely.

(c) Where the applicant makes a request for early publication under Article 21(2)(b), any designated Office may consider any indication not furnished before the technical preparations for international publication have been completed as not having been furnished in time.

Jump to MPEP SourcePeriod for Reply (37 CFR 1.134)
StatutoryInformativeAlways
[mpep-1823-01-aa23e6ba71b55daff960743b]
Notify Designated Offices After Technical Preparations
Note:
If an indication is received after technical preparations for international publication, notify the date and relevant data to designated offices.

(d) The International Bureau shall notify the applicant of the date on which it received any indication furnished under paragraph (a), and:

(ii) if the indication was received after the technical preparations for international publication have been completed, notify that date and the relevant data from the indication to the designated Offices.

Jump to MPEP SourcePeriod for Reply (37 CFR 1.134)
Topic

Request Content and Form

2 rules
StatutoryPermittedAlways
[mpep-1823-01-96620612a69031a47302a88d]
Japan Patent Office Can Request Samples
Note:
The Japan Patent Office is the only authority permitted to request samples of deposited biological material from applicants.

International Searching Authorities and International Preliminary Examining Authorities are not expected to request access to deposited biological material. However, in order to retain the possibility of access to a deposited biological material referred to in an international application which is being searched or examined by such an Authority, the PCT provides that the Authorities may, if they fulfill certain conditions, ask for samples. Thus, an Authority may only ask for samples if it has notified the International Bureau (in a general notification) that it may require samples and the International Bureau has published the notification in the PCT Gazette. The only Authority which has made such a notification (and thus the only Authority which may request samples) is the Japan Patent Office. If a sample is asked for, the request is directed to the applicant, who then becomes responsible for making the necessary arrangements for the sample to be provided.

Jump to MPEP SourceRequest Content and FormPCT Request FormArticle 19 Amendment Scope
StatutoryInformativeAlways
[mpep-1823-01-5de090bc4604f626bbd23b98]
Request for Sample from Applicant
Note:
If a sample is requested by the Japan Patent Office, the applicant must arrange for its provision.

International Searching Authorities and International Preliminary Examining Authorities are not expected to request access to deposited biological material. However, in order to retain the possibility of access to a deposited biological material referred to in an international application which is being searched or examined by such an Authority, the PCT provides that the Authorities may, if they fulfill certain conditions, ask for samples. Thus, an Authority may only ask for samples if it has notified the International Bureau (in a general notification) that it may require samples and the International Bureau has published the notification in the PCT Gazette. The only Authority which has made such a notification (and thus the only Authority which may request samples) is the Japan Patent Office. If a sample is asked for, the request is directed to the applicant, who then becomes responsible for making the necessary arrangements for the sample to be provided.

Jump to MPEP SourceRequest Content and FormSignature RequirementsPCT Request Form
Topic

Patent Cooperation Treaty

1 rules
StatutoryInformativeAlways
[mpep-1823-01-2b527856dff1dda612a813b0]
National Office Deposit Indications Required
Note:
Applicants must provide indications about deposited biological materials for national offices that require such information, as published in the PCT Gazette.

The national laws of some of the national (or regional) Offices require that, besides indications concerning the deposit of a biological material, an indication be given concerning the biological material itself, such as, for example, a short description of its characteristics, at least to the extent that this information is available to the applicant. These requirements must be met in the case of international applications for which any such Office is a designated Office, provided that the requirements have been published in the PCT Gazette. Annex L of the PCT Applicant’s Guide indicates, for each of the national (or regional) Offices, the requirements (if any) of this kind which have been published.

Jump to MPEP SourcePatent Cooperation TreatyPCT Description RequirementsPCT Description and Claims
Topic

Publication Language

1 rules
StatutoryInformativeAlways
[mpep-1823-01-df453132efc7076fca0c785f]
Publication Includes Indicated Dates for Biological Material
Note:
The publication of an international application includes the dates when indications about deposited biological material were provided to the International Bureau.

No check is made in the international phase to determine whether a reference has been furnished within the prescribed time limit. However, the International Bureau notifies the designated Offices of the date(s) on which indications, not included in the international application as filed, were furnished to it. Those dates are also mentioned in the publication of the international application. Failure to include a reference to a deposited biological material (or any indication required in such a reference) in the international application as filed, or failure to furnish it (or the indication) within the prescribed time limit, has no consequence if the national law does not require the reference (or indication) to be furnished in a national application. Where there is a consequence, it is the same as that which applies under the national law.

Jump to MPEP SourcePublication LanguagePCT International Application FilingInternational Publication
Topic

Article 19 Amendment Timing

1 rules
StatutoryRequiredAlways
[mpep-1823-01-eeb2b2f5abf6c44b747b3b4b]
Requirement for Deposited Biological Material Reference
Note:
The international application must include a reference to deposited biological material, and if not included initially, it must be provided within the prescribed time limit unless national law does not require it.

No check is made in the international phase to determine whether a reference has been furnished within the prescribed time limit. However, the International Bureau notifies the designated Offices of the date(s) on which indications, not included in the international application as filed, were furnished to it. Those dates are also mentioned in the publication of the international application. Failure to include a reference to a deposited biological material (or any indication required in such a reference) in the international application as filed, or failure to furnish it (or the indication) within the prescribed time limit, has no consequence if the national law does not require the reference (or indication) to be furnished in a national application. Where there is a consequence, it is the same as that which applies under the national law.

Jump to MPEP SourceArticle 19 Amendment TimingEffect of International FilingNationals and Residents
Topic

Signature Requirements

1 rules
StatutoryInformativeAlways
[mpep-1823-01-0ad6cb9d6d9e509c0400d044]
Optional Sheet for Biological Material Indications Required
Note:
An optional sheet must be included with the international application if it contains indications about deposited biological material, and a reference to this sheet should be made in the check list.

To the extent that indications relating to the deposit of a biological material are not given in the description, because they are furnished later, they may be given in the “optional sheet” provided for that purpose. If the sheet is submitted when the international application is filed, a reference to it should be made in the check list contained on the last sheet of the Request form. Should certain States be designated, e.g., Israel, Japan, Korea, Mexico, or Turkey, such a sheet must, if used, be included as one of the sheets of the description at the time of filing; otherwise the indications given in it will not be taken into account by the respective patent offices of those designated States in the national phase. Requirements of the various Offices are set forth in Annex L of the PCT Applicant’s Guide, available online at www.wipo.int/pct/en/appguide. If the sheet is furnished to the International Bureau later, it must be enclosed with a letter.

Jump to MPEP SourceSignature RequirementsPatent Cooperation TreatyArticle 19 Amendment Scope

Citations

Primary topicCitation
Effect of International Filing
Nationals and Residents
PCT Rule 13bis.6(b)

Source Text from USPTO’s MPEP

This is an exact copy of the MPEP from the USPTO. It is here for your reference to see the section in context.

BlueIron Last Updated: 2025-12-31