MPEP § 2405 — Acceptable Depository (Annotated Rules)

§2405 Acceptable Depository

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

This page consolidates and annotates all enforceable requirements under MPEP § 2405, 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.

Acceptable Depository

This section addresses Acceptable Depository. Primary authority: 37 CFR 1.803, 37 CFR 1.803(a)(2), and 37 CFR 1.803(b). Contains: 2 requirements, 2 guidance statements, 4 permissions, and 5 other statements.

Key Rules

Topic

Acceptable Depository Requirements

11 rules
StatutoryRequiredAlways
[mpep-2405-6cd4594ebd2b6bd86f5970ec]
Depository for Patent Purposes Must Meet Specific Criteria
Note:
A deposit must be made in an International Depositary Authority, another recognized depository, or meet specific suitability requirements determined by the Commissioner.
(a) A deposit shall be recognized for the purposes of these regulations if made in
  • (1) any International Depositary Authority (IDA) as established under the Budapest Treaty on the International Recognition of the Deposit of Microorganisms for the Purposes of Patent Procedure, or
  • (2) any other depository recognized to be suitable by the Office. Suitability will be determined by the Commissioner on the basis of the administrative and technical competence, and agreement of the depository to comply with the terms and conditions applicable to deposits for patent purposes. The Commissioner may seek the advice of impartial consultants on the suitability of a depository. The depository must:
    • (i) Have a continuous existence;
    • (ii) Exist independent of the control of the depositor;
    • (iii) Possess the staff and facilities sufficient to examine the viability of a deposit and store the deposit in a manner which ensures that it is kept viable and uncontaminated;
    • (iv) Provide for sufficient safety measures to minimize the risk of losing biological material deposited with it;
    • (v) Be impartial and objective;
    • (vi) Furnish samples of the deposited material in an expeditious and proper manner; and
    • (vii) Promptly notify depositors of its inability to furnish samples, and the reasons why.
Jump to MPEP Source · 37 CFR 1.803Acceptable Depository RequirementsDeposit of Biological MaterialsCompliance with Budapest Treaty
StatutoryRequiredAlways
[mpep-2405-ef149abe7c4955f685f64e6f]
Depository Must Communicate with Commissioner for Status
Note:
A depository seeking status must send a communication to the Commissioner detailing its capacity and intentions.
(b) A depository seeking status under paragraph (a)(2) of this section must direct a communication to the Commissioner which shall:
  • (1) Indicate the name and address of the depository to which the communication relates;
  • (2) Contain detailed information as to the capacity of the depository to comply with the requirements of paragraph (a) (2) of this section, including information on its legal status, scientific standing, staff and facilities;
  • (3) Indicate that the depository intends to be available, for the purposes of deposit, to any depositor under these same conditions;
  • (4) Where the depository intends to accept for deposit only certain kinds of biological material, specify such kinds;
  • (5) Indicate the amount of any fees that the depository will, upon acquiring the status of suitable depository under paragraph (a) (2) of this section, charge for storage, viability statements and furnishings of samples of the deposit.
Jump to MPEP Source · 37 CFR 1.803Acceptable Depository RequirementsDeposit of Biological Materials
StatutoryInformativeAlways
[mpep-2405-873801b4670c157d4892492f]
Depository Fees Must Be Indicated
Note:
A depository seeking status must indicate the fees for storage, viability statements, and sample furnishings upon acquiring suitable depository status.

(b) A depository seeking status under paragraph (a)(2) of this section must direct a communication to the Commissioner which shall:

(5) Indicate the amount of any fees that the depository will, upon acquiring the status of suitable depository under paragraph (a) (2) of this section, charge for storage, viability statements and furnishings of samples of the deposit.

Jump to MPEP Source · 37 CFR 1.803Acceptable Depository RequirementsDeposit of Biological Materials
StatutoryPermittedAlways
[mpep-2405-6ec7d5a78dd41445332acd22]
Common Items May Be Referenced
Note:
If a previous communication under paragraph (b) of this section is recorded, items in common with the previous communication may be incorporated by reference.

(c) A depository having status under paragraph (a)(2) of this section limited to certain kinds of biological material may extend such status to additional kinds of biological material by directing a communication to the Commissioner in accordance with paragraph (b) of this section. If a previous communication under paragraph (b) of this section is of record, items in common with the previous communication may be incorporated by reference.

Jump to MPEP Source · 37 CFR 1.803Acceptable Depository RequirementsDeposit of Biological Materials
StatutoryInformativeAlways
[mpep-2405-f7aeebf347b63c9a3e7acd05]
Deposit Must Be Recognized Under Regulations
Note:
A deposit of biological material must be made in an acceptable depository as defined by the regulations, failing which it will not satisfy the requirements of 35 U.S.C. 112.

37 CFR 1.803 indicates that a depository will be recognized as acceptable for the purposes of these regulations if it is either an International Depositary Authority (IDA) established under the Budapest Treaty, or if it is a depository recognized as suitable by the Commissioner. After the effective date of these regulations, a deposit of biological material which is made in a depository which is not recognized as acceptable under this regulation will not be considered as satisfying the requirements of 35 U.S.C. 112. See Ex parte Humphreys, 24 USPQ2d 1255 (Bd. Pat. App. & Int. 1992). On the other hand, if a deposit is not required to satisfy the requirements of 35 U.S.C. 112, it is permissible to make reference to such a deposit even though it may not be in a depository or made under the conditions which are acceptable under these regulations. As new depositories are recognized as suitable by the Commissioner, their identity will be announced in the Official Gazette.

Jump to MPEP Source · 37 CFR 1.803Acceptable Depository RequirementsCompliance with Budapest TreatyAcceptable Deposit Conditions
StatutoryProhibitedAlways
[mpep-2405-74eb91deb6a73010a61cb5bc]
Permissible Reference to Non-Depository Biological Material
Note:
It is permissible to reference biological material even if it was not deposited in an acceptable depository under the conditions specified by regulations.

37 CFR 1.803 indicates that a depository will be recognized as acceptable for the purposes of these regulations if it is either an International Depositary Authority (IDA) established under the Budapest Treaty, or if it is a depository recognized as suitable by the Commissioner. After the effective date of these regulations, a deposit of biological material which is made in a depository which is not recognized as acceptable under this regulation will not be considered as satisfying the requirements of 35 U.S.C. 112. See Ex parte Humphreys, 24 USPQ2d 1255 (Bd. Pat. App. & Int. 1992). On the other hand, if a deposit is not required to satisfy the requirements of 35 U.S.C. 112, it is permissible to make reference to such a deposit even though it may not be in a depository or made under the conditions which are acceptable under these regulations. As new depositories are recognized as suitable by the Commissioner, their identity will be announced in the Official Gazette.

Jump to MPEP Source · 37 CFR 1.803Acceptable Depository RequirementsCompliance with Budapest TreatyAcceptable Deposit Conditions
StatutoryPermittedAlways
[mpep-2405-b0041f42cbb11c42a1b89833]
Commissioner Judges Suitability Based on Need and Information
Note:
The Commissioner will determine if an organization meets the suitability requirements for a patent depository based on need and information provided by the organization, as well as additional sources.

An organization may be recognized as suitable by the Office if the procedure and conditions specified in 37 CFR 1.803(a)(2) and 37 CFR 1.803(b) are followed. Generally, it is not the intention of the Office to recognize as suitable any organization where the need for a suitable depository for patent purposes is being met by depositories recognized as IDAs under the Budapest Treaty. Suitability will be judged by the Commissioner, based on need and the information supplied by the organization seeking status, and information obtained from other sources that may be consulted.

Jump to MPEP Source · 37 CFR 1.803(a)(2)Acceptable Depository RequirementsCompliance with Budapest TreatyRecognized Depository (IDA)
StatutoryInformativeAlways
[mpep-2405-2c6a0df887ab0cddf1fefbf6]
Independent Depository Requirement for Biological Materials
Note:
Patent applicants must use an independent depository to ensure the safe and reliable storage of biological materials, preserving public access post-patent expiration.

While there is a desire to provide flexibility to a patent applicant in selecting an appropriate depository, these rules are not intended to permit each patent applicant to become its own depository since both the patent owner and the public have an interest in the continued availability and accessibility of the deposit during the enforceable life of the patent, and the public has a continuing interest in its availability when the patent is no longer enforceable. The concept of a depository independent of the control of the depositor or an IDA as an acceptable depository is based on the need and desire to ensure the safe and reliable storage of a deposited biological material under circumstances that are substantially free of the opportunity for intentional mishandling or negligent handling of the deposited material. The use of an independent depository or internationally recognized depository will tend to preserve the integrity of the deposit process against those that may accidentally alter the deposited material, may wish to tamper with the deposited material or may wish to resume control of its availability when the patent is no longer enforceable, and will tend to preserve the interest of the public in the access to the biological material once the term of the patent expires.

Jump to MPEP Source · 37 CFR 1.803Acceptable Depository RequirementsDeposit of Biological MaterialsRecognized Depository (IDA)
StatutoryPermittedAlways
[mpep-2405-7b152ed60ae86576cfda3e3b]
Independent Depository Requirement for Biological Material Preservation
Note:
Patent applicants must use an independent depository to ensure the safe storage and public access of biological material after patent expiration.

While there is a desire to provide flexibility to a patent applicant in selecting an appropriate depository, these rules are not intended to permit each patent applicant to become its own depository since both the patent owner and the public have an interest in the continued availability and accessibility of the deposit during the enforceable life of the patent, and the public has a continuing interest in its availability when the patent is no longer enforceable. The concept of a depository independent of the control of the depositor or an IDA as an acceptable depository is based on the need and desire to ensure the safe and reliable storage of a deposited biological material under circumstances that are substantially free of the opportunity for intentional mishandling or negligent handling of the deposited material. The use of an independent depository or internationally recognized depository will tend to preserve the integrity of the deposit process against those that may accidentally alter the deposited material, may wish to tamper with the deposited material or may wish to resume control of its availability when the patent is no longer enforceable, and will tend to preserve the interest of the public in the access to the biological material once the term of the patent expires.

Jump to MPEP Source · 37 CFR 1.803Acceptable Depository RequirementsDeposit of Biological MaterialsRecognized Depository (IDA)
StatutoryRecommendedAlways
[mpep-2405-b4421b0368219c8daae6cbd6]
Requirement for Notifying Commissioner of Change in Biological Materials
Note:
A depository must notify the Commissioner when changing the kinds of biological materials it will accept and maintain, providing a complete list of new materials.

When a depository having status under 37 CFR 1.803(a)(2) seeks to change the kinds of biological materials that it will accept and maintain for the purposes of these rules, a communication requesting such a change should be directed to the Commissioner containing the information requested in 37 CFR 1.803(b). When such a change is requested, the requesting depository should provide a complete list of the kinds of biological materials it will accept.

Jump to MPEP Source · 37 CFR 1.803(a)(2)Acceptable Depository RequirementsDeposit of Biological Materials
StatutoryRecommendedAlways
[mpep-2405-fb22aa9d278ce81ec29f1e65]
Depository Must Provide Full Material List for Change Request
Note:
When a depository seeks to change the kinds of biological materials it will accept, it must provide a complete list of those materials in its request to the Commissioner.

When a depository having status under 37 CFR 1.803(a)(2) seeks to change the kinds of biological materials that it will accept and maintain for the purposes of these rules, a communication requesting such a change should be directed to the Commissioner containing the information requested in 37 CFR 1.803(b). When such a change is requested, the requesting depository should provide a complete list of the kinds of biological materials it will accept.

Jump to MPEP Source · 37 CFR 1.803(a)(2)Acceptable Depository RequirementsDeposit of Biological Materials
Topic

Compliance with Budapest Treaty

4 rules
StatutoryInformativeAlways
[mpep-2405-aec723316ef9585252371821]
Depositories Must Be Recognized Under Budapest Treaty or Commissioner’s Approval
Note:
A depository must be either an International Depositary Authority established under the Budapest Treaty or recognized by the Commissioner to meet regulatory requirements.

37 CFR 1.803 indicates that a depository will be recognized as acceptable for the purposes of these regulations if it is either an International Depositary Authority (IDA) established under the Budapest Treaty, or if it is a depository recognized as suitable by the Commissioner. After the effective date of these regulations, a deposit of biological material which is made in a depository which is not recognized as acceptable under this regulation will not be considered as satisfying the requirements of 35 U.S.C. 112. See Ex parte Humphreys, 24 USPQ2d 1255 (Bd. Pat. App. & Int. 1992). On the other hand, if a deposit is not required to satisfy the requirements of 35 U.S.C. 112, it is permissible to make reference to such a deposit even though it may not be in a depository or made under the conditions which are acceptable under these regulations. As new depositories are recognized as suitable by the Commissioner, their identity will be announced in the Official Gazette.

Jump to MPEP Source · 37 CFR 1.803Compliance with Budapest TreatyAcceptable Deposit ConditionsRecognized Depository (IDA)
StatutoryPermittedAlways
[mpep-2405-4b701620459901e8f2e44470]
Suitable Depository for Patents Not Recognized by IDAs
Note:
An organization cannot be recognized as suitable if its need is met by depositories recognized as IDAs under the Budapest Treaty.

An organization may be recognized as suitable by the Office if the procedure and conditions specified in 37 CFR 1.803(a)(2) and 37 CFR 1.803(b) are followed. Generally, it is not the intention of the Office to recognize as suitable any organization where the need for a suitable depository for patent purposes is being met by depositories recognized as IDAs under the Budapest Treaty. Suitability will be judged by the Commissioner, based on need and the information supplied by the organization seeking status, and information obtained from other sources that may be consulted.

Jump to MPEP Source · 37 CFR 1.803(a)(2)Compliance with Budapest TreatyRecognized Depository (IDA)Budapest Treaty Deposits
StatutoryInformativeAlways
[mpep-2405-7a3d3b945555111a8cc31d54]
Deposit Does Not Meet Budapest Treaty Requirements
Note:
A deposit in an IDA recognized under the Budapest Treaty does not automatically comply with its requirements or deposit regulations.

37 CFR 1.803(d) indicates that once a depository is recognized as suitable for the purposes of this rule, or has defaulted or discontinued its performance under this section, notice thereof will be published in the Official Gazette of the Patent and Trademark Office. The mere fact that a deposit has been made in an IDA recognized under the Budapest Treaty does not mean that the terms of the deposit meet either the requirements of the Budapest Treaty or the deposit regulations. Many of the depositories recognized under the Budapest Treaty have many different arrangements under which biological material may be stored.

Jump to MPEP Source · 37 CFR 1.803(d)Compliance with Budapest TreatyRecognized Depository (IDA)Budapest Treaty Deposits
StatutoryPermittedAlways
[mpep-2405-a1f32ff467fc2b4e43c5d288]
Biological Material Storage Variations Under Budapest Treaty
Note:
The rule states that depositories recognized under the Budapest Treaty have diverse arrangements for storing biological material, indicating compliance with treaty requirements is not uniform.

37 CFR 1.803(d) indicates that once a depository is recognized as suitable for the purposes of this rule, or has defaulted or discontinued its performance under this section, notice thereof will be published in the Official Gazette of the Patent and Trademark Office. The mere fact that a deposit has been made in an IDA recognized under the Budapest Treaty does not mean that the terms of the deposit meet either the requirements of the Budapest Treaty or the deposit regulations. Many of the depositories recognized under the Budapest Treaty have many different arrangements under which biological material may be stored.

Jump to MPEP Source · 37 CFR 1.803(d)Compliance with Budapest TreatyBudapest Treaty DepositsDeposit of Biological Materials
Topic

Deposit of Biological Materials

2 rules
StatutoryPermittedAlways
[mpep-2405-d4e7491ce2b2c081a42aafa1]
Depository May Extend Biological Material Status
Note:
A depository with limited biological material status can extend it by communicating with the Commissioner as required.

(c) A depository having status under paragraph (a)(2) of this section limited to certain kinds of biological material may extend such status to additional kinds of biological material by directing a communication to the Commissioner in accordance with paragraph (b) of this section. If a previous communication under paragraph (b) of this section is of record, items in common with the previous communication may be incorporated by reference.

Jump to MPEP Source · 37 CFR 1.803Deposit of Biological MaterialsAcceptable Depository Requirements
StatutoryInformativeAlways
[mpep-2405-2d0531c2a8f296f81f771479]
Deposit of Biological Materials Must Be in Recognized Repository
Note:
A deposit of biological material must be made in a repository recognized as acceptable under the regulations to satisfy the requirements of 35 U.S.C. 112.

37 CFR 1.803 indicates that a depository will be recognized as acceptable for the purposes of these regulations if it is either an International Depositary Authority (IDA) established under the Budapest Treaty, or if it is a depository recognized as suitable by the Commissioner. After the effective date of these regulations, a deposit of biological material which is made in a depository which is not recognized as acceptable under this regulation will not be considered as satisfying the requirements of 35 U.S.C. 112. See Ex parte Humphreys, 24 USPQ2d 1255 (Bd. Pat. App. & Int. 1992). On the other hand, if a deposit is not required to satisfy the requirements of 35 U.S.C. 112, it is permissible to make reference to such a deposit even though it may not be in a depository or made under the conditions which are acceptable under these regulations. As new depositories are recognized as suitable by the Commissioner, their identity will be announced in the Official Gazette.

Jump to MPEP Source · 37 CFR 1.803Deposit of Biological MaterialsAcceptable Depository RequirementsCompliance with Budapest Treaty
Topic

Recognized Depository (IDA)

2 rules
StatutoryInformativeAlways
[mpep-2405-e0b083ea3e4ba6df02579f59]
Independent Depository Requirement for Biological Material Storage
Note:
Patent applicants must use an independent depository to ensure the safe storage of biological materials, free from intentional or negligent mishandling.

While there is a desire to provide flexibility to a patent applicant in selecting an appropriate depository, these rules are not intended to permit each patent applicant to become its own depository since both the patent owner and the public have an interest in the continued availability and accessibility of the deposit during the enforceable life of the patent, and the public has a continuing interest in its availability when the patent is no longer enforceable. The concept of a depository independent of the control of the depositor or an IDA as an acceptable depository is based on the need and desire to ensure the safe and reliable storage of a deposited biological material under circumstances that are substantially free of the opportunity for intentional mishandling or negligent handling of the deposited material. The use of an independent depository or internationally recognized depository will tend to preserve the integrity of the deposit process against those that may accidentally alter the deposited material, may wish to tamper with the deposited material or may wish to resume control of its availability when the patent is no longer enforceable, and will tend to preserve the interest of the public in the access to the biological material once the term of the patent expires.

Jump to MPEP Source · 37 CFR 1.803Recognized Depository (IDA)Acceptable Depository RequirementsDeposit of Biological Materials
StatutoryInformativeAlways
[mpep-2405-cfbaf9bd4e706d0348385f6a]
Notice of Recognized or Defaulted Depositories Required
Note:
The Patent and Trademark Office must publish notice when a depository is recognized as suitable or has defaulted under the deposit regulations.

37 CFR 1.803(d) indicates that once a depository is recognized as suitable for the purposes of this rule, or has defaulted or discontinued its performance under this section, notice thereof will be published in the Official Gazette of the Patent and Trademark Office. The mere fact that a deposit has been made in an IDA recognized under the Budapest Treaty does not mean that the terms of the deposit meet either the requirements of the Budapest Treaty or the deposit regulations. Many of the depositories recognized under the Budapest Treaty have many different arrangements under which biological material may be stored.

Jump to MPEP Source · 37 CFR 1.803(d)Recognized Depository (IDA)Acceptable Depository RequirementsDeposit of Biological Materials
Topic

Acceptable Deposit Conditions

1 rules
StatutoryInformativeAlways
[mpep-2405-a50959dd177ad1cc54c358c8]
Commissioner Announces Suitable Depots
Note:
The Commissioner will announce new depositories deemed suitable for biological material deposits in the Official Gazette.

37 CFR 1.803 indicates that a depository will be recognized as acceptable for the purposes of these regulations if it is either an International Depositary Authority (IDA) established under the Budapest Treaty, or if it is a depository recognized as suitable by the Commissioner. After the effective date of these regulations, a deposit of biological material which is made in a depository which is not recognized as acceptable under this regulation will not be considered as satisfying the requirements of 35 U.S.C. 112. See Ex parte Humphreys, 24 USPQ2d 1255 (Bd. Pat. App. & Int. 1992). On the other hand, if a deposit is not required to satisfy the requirements of 35 U.S.C. 112, it is permissible to make reference to such a deposit even though it may not be in a depository or made under the conditions which are acceptable under these regulations. As new depositories are recognized as suitable by the Commissioner, their identity will be announced in the Official Gazette.

Jump to MPEP Source · 37 CFR 1.803Acceptable Deposit ConditionsRecognized Depository (IDA)Acceptable Depository Requirements

Citations

Primary topicCitation
Acceptable Deposit Conditions
Acceptable Depository Requirements
Compliance with Budapest Treaty
Deposit of Biological Materials
35 U.S.C. § 112
Acceptable Deposit Conditions
Acceptable Depository Requirements
Compliance with Budapest Treaty
Deposit of Biological Materials
37 CFR § 1.803
Acceptable Depository Requirements
Compliance with Budapest Treaty
37 CFR § 1.803(a)(2)
Acceptable Depository Requirements
Compliance with Budapest Treaty
37 CFR § 1.803(b)
Compliance with Budapest Treaty
Recognized Depository (IDA)
37 CFR § 1.803(d)
Acceptable Deposit Conditions
Acceptable Depository Requirements
Compliance with Budapest Treaty
Deposit of Biological Materials
Ex parte Humphreys, 24 USPQ2d 1255 (Bd. Pat. App. & Int. 1992)

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BlueIron Last Updated: 2025-12-31