Patent Law FAQ

This FAQ answers all your questions about patent law, patent procedure, and the patent examination process.

c Expand All C Collapse All

MPEP 2000 – Duty Of Disclosure (1)

Individuals covered by 37 CFR 1.56 must disclose information about copending U.S. patent applications that are “material to patentability” of the application in question. This includes:

  • Identification of pending or abandoned applications filed by at least one of the inventors or assigned to the same assignee
  • Applications that disclose similar subject matter
  • Prior art references from one application that are material to patentability of another application

The MPEP emphasizes: [T]he applicant has the burden of presenting the examiner with a complete and accurate record to support the allowance of letters patent.

It’s important to note that examiners cannot be assumed to be aware of all related applications, so applicants must bring this information to their attention.

To learn more:

MPEP 2001.06 – Sources Of Information Under 37 Cfr 1.56 (1)

Individuals covered by 37 CFR 1.56 must disclose information about copending U.S. patent applications that are “material to patentability” of the application in question. This includes:

  • Identification of pending or abandoned applications filed by at least one of the inventors or assigned to the same assignee
  • Applications that disclose similar subject matter
  • Prior art references from one application that are material to patentability of another application

The MPEP emphasizes: [T]he applicant has the burden of presenting the examiner with a complete and accurate record to support the allowance of letters patent.

It’s important to note that examiners cannot be assumed to be aware of all related applications, so applicants must bring this information to their attention.

To learn more:

MPEP 2100 – Patentability (3)

In product-by-process claim rejections, the burden of proof is initially on the patent examiner, but it’s lower than for conventional product claims. According to MPEP 2113:

“The Patent Office bears a lesser burden of proof in making out a case of prima facie obviousness for product-by-process claims because of their peculiar nature” than when a product is claimed in the conventional fashion.

Once the examiner provides a rationale showing that the claimed product appears to be the same or similar to a prior art product, the burden shifts to the applicant. The applicant must then provide evidence establishing a nonobvious difference between the claimed product and the prior art product.

To learn more:

What are the Graham factors in patent obviousness analysis?

The Graham factors, established by the Supreme Court in Graham v. John Deere Co., are four key considerations used in determining obviousness under 35 U.S.C. 103. These factors are:

  • The scope and content of the prior art
  • The differences between the prior art and the claimed invention
  • The level of ordinary skill in the pertinent art
  • Objective evidence of nonobviousness (secondary considerations)

As stated in MPEP 2141: “The Graham factual inquiries … are to be considered when making a determination of obviousness.” Examiners must consider these factors when evaluating whether a claimed invention is obvious in light of the prior art.

To learn more:

Interchangeability plays a crucial role in determining equivalence in patent examination. It is one of the factors that support a conclusion that a prior art element is an equivalent to a claimed limitation. Specifically:

MPEP 2183 states: “A person of ordinary skill in the art would have recognized the interchangeability of the element shown in the prior art for the corresponding element disclosed in the specification.

This means that if a person with ordinary skill in the relevant field would consider the prior art element and the claimed element to be interchangeable, it supports the argument for equivalence. Examiners may cite this factor when making a prima facie case of equivalence, and it’s an important consideration for both applicants and examiners in patent prosecution.

To learn more:

MPEP 2113 – Product – By – Process Claims (1)

In product-by-process claim rejections, the burden of proof is initially on the patent examiner, but it’s lower than for conventional product claims. According to MPEP 2113:

“The Patent Office bears a lesser burden of proof in making out a case of prima facie obviousness for product-by-process claims because of their peculiar nature” than when a product is claimed in the conventional fashion.

Once the examiner provides a rationale showing that the claimed product appears to be the same or similar to a prior art product, the burden shifts to the applicant. The applicant must then provide evidence establishing a nonobvious difference between the claimed product and the prior art product.

To learn more:

MPEP 2141 – Examination Guidelines For Determining Obviousness Under 35 U.S.C. 103 (1)

What are the Graham factors in patent obviousness analysis?

The Graham factors, established by the Supreme Court in Graham v. John Deere Co., are four key considerations used in determining obviousness under 35 U.S.C. 103. These factors are:

  • The scope and content of the prior art
  • The differences between the prior art and the claimed invention
  • The level of ordinary skill in the pertinent art
  • Objective evidence of nonobviousness (secondary considerations)

As stated in MPEP 2141: “The Graham factual inquiries … are to be considered when making a determination of obviousness.” Examiners must consider these factors when evaluating whether a claimed invention is obvious in light of the prior art.

To learn more:

MPEP 2183 – Making A Prima Facie Case Of Equivalence (1)

Interchangeability plays a crucial role in determining equivalence in patent examination. It is one of the factors that support a conclusion that a prior art element is an equivalent to a claimed limitation. Specifically:

MPEP 2183 states: “A person of ordinary skill in the art would have recognized the interchangeability of the element shown in the prior art for the corresponding element disclosed in the specification.

This means that if a person with ordinary skill in the relevant field would consider the prior art element and the claimed element to be interchangeable, it supports the argument for equivalence. Examiners may cite this factor when making a prima facie case of equivalence, and it’s an important consideration for both applicants and examiners in patent prosecution.

To learn more:

Patent Law (4)

Individuals covered by 37 CFR 1.56 must disclose information about copending U.S. patent applications that are “material to patentability” of the application in question. This includes:

  • Identification of pending or abandoned applications filed by at least one of the inventors or assigned to the same assignee
  • Applications that disclose similar subject matter
  • Prior art references from one application that are material to patentability of another application

The MPEP emphasizes: [T]he applicant has the burden of presenting the examiner with a complete and accurate record to support the allowance of letters patent.

It’s important to note that examiners cannot be assumed to be aware of all related applications, so applicants must bring this information to their attention.

To learn more:

In product-by-process claim rejections, the burden of proof is initially on the patent examiner, but it’s lower than for conventional product claims. According to MPEP 2113:

“The Patent Office bears a lesser burden of proof in making out a case of prima facie obviousness for product-by-process claims because of their peculiar nature” than when a product is claimed in the conventional fashion.

Once the examiner provides a rationale showing that the claimed product appears to be the same or similar to a prior art product, the burden shifts to the applicant. The applicant must then provide evidence establishing a nonobvious difference between the claimed product and the prior art product.

To learn more:

What are the Graham factors in patent obviousness analysis?

The Graham factors, established by the Supreme Court in Graham v. John Deere Co., are four key considerations used in determining obviousness under 35 U.S.C. 103. These factors are:

  • The scope and content of the prior art
  • The differences between the prior art and the claimed invention
  • The level of ordinary skill in the pertinent art
  • Objective evidence of nonobviousness (secondary considerations)

As stated in MPEP 2141: “The Graham factual inquiries … are to be considered when making a determination of obviousness.” Examiners must consider these factors when evaluating whether a claimed invention is obvious in light of the prior art.

To learn more:

Interchangeability plays a crucial role in determining equivalence in patent examination. It is one of the factors that support a conclusion that a prior art element is an equivalent to a claimed limitation. Specifically:

MPEP 2183 states: “A person of ordinary skill in the art would have recognized the interchangeability of the element shown in the prior art for the corresponding element disclosed in the specification.

This means that if a person with ordinary skill in the relevant field would consider the prior art element and the claimed element to be interchangeable, it supports the argument for equivalence. Examiners may cite this factor when making a prima facie case of equivalence, and it’s an important consideration for both applicants and examiners in patent prosecution.

To learn more:

Patent Procedure (4)

Individuals covered by 37 CFR 1.56 must disclose information about copending U.S. patent applications that are “material to patentability” of the application in question. This includes:

  • Identification of pending or abandoned applications filed by at least one of the inventors or assigned to the same assignee
  • Applications that disclose similar subject matter
  • Prior art references from one application that are material to patentability of another application

The MPEP emphasizes: [T]he applicant has the burden of presenting the examiner with a complete and accurate record to support the allowance of letters patent.

It’s important to note that examiners cannot be assumed to be aware of all related applications, so applicants must bring this information to their attention.

To learn more:

In product-by-process claim rejections, the burden of proof is initially on the patent examiner, but it’s lower than for conventional product claims. According to MPEP 2113:

“The Patent Office bears a lesser burden of proof in making out a case of prima facie obviousness for product-by-process claims because of their peculiar nature” than when a product is claimed in the conventional fashion.

Once the examiner provides a rationale showing that the claimed product appears to be the same or similar to a prior art product, the burden shifts to the applicant. The applicant must then provide evidence establishing a nonobvious difference between the claimed product and the prior art product.

To learn more:

What are the Graham factors in patent obviousness analysis?

The Graham factors, established by the Supreme Court in Graham v. John Deere Co., are four key considerations used in determining obviousness under 35 U.S.C. 103. These factors are:

  • The scope and content of the prior art
  • The differences between the prior art and the claimed invention
  • The level of ordinary skill in the pertinent art
  • Objective evidence of nonobviousness (secondary considerations)

As stated in MPEP 2141: “The Graham factual inquiries … are to be considered when making a determination of obviousness.” Examiners must consider these factors when evaluating whether a claimed invention is obvious in light of the prior art.

To learn more:

Interchangeability plays a crucial role in determining equivalence in patent examination. It is one of the factors that support a conclusion that a prior art element is an equivalent to a claimed limitation. Specifically:

MPEP 2183 states: “A person of ordinary skill in the art would have recognized the interchangeability of the element shown in the prior art for the corresponding element disclosed in the specification.

This means that if a person with ordinary skill in the relevant field would consider the prior art element and the claimed element to be interchangeable, it supports the argument for equivalence. Examiners may cite this factor when making a prima facie case of equivalence, and it’s an important consideration for both applicants and examiners in patent prosecution.

To learn more: