The United States Patent and Trademark Office (USPTO) has granted Certinal’s e-signature a patent

Certinal Patent & Trademark

The most secure method of document approval available to businesses is  digital signatures. In some situations, some nations, including the United States, need digital signatures. They are crucial in other circumstances for ensuring non-repudiation and removing the risk of manipulation. Certinal’s USPTO approved electronic signature has a patent for systems & methods for predicting and moderating signature location within electronic documents.

Contracts, proposals, invoices, and other significant business documents are typically transferred as PDFs. You will discover all the information you require in this article. We’ll go through terminology, outline the technical framework, and walk you through the process of securely authorizing those critical  documents with a digital signature.


Before we dive into the details, let’s cover some of the terminology used in digital signatures. Digital Signatures are a critical part of identity verification and security measures. Digital certificates are used to sign documents electronically and confirm that they have not been tampered with since being signed. A Certificate Authority (CA) is an entity responsible for issuing digital certificates and verifying their validity.

Technical Framework:

The technical framework behind Digital Signatures is based on secure cryptography using public key infrastructure (PKI). PKI works by combining two separate keys – one private and one public – to create a unique signature for each document being sent. Digital signatures use both these keys to establish the authenticity of a document, as well as its integrity. The private key is used to generate a signature, which can then be verified by using the public key.

The Process of Digital Signatures:

Once you have established the technical framework for Digital Signatures and gathered the correct information, it’s time to begin the process of actually signing your documents. The first step is to authenticate the sender’s identity. This is done using Digital Certificates issued by a Certificate Authority (CA). Digital Certificates validate that a party has securely identified itself and allows them to create legally binding digital signatures on PDFs.

Once this step is complete, the sender can start signing documents with their Digital Certificate. Digital Certificates are used to sign documents electronically, ensuring that they have not been tampered with since being signed. Digital Signatures also store the identity of the sender so that documents can’t be repudiated later on.

USPTO Approved Electronic Signature

How to incorporate a digital signature into a PDF file:

Once the Digital Certificate has been issued and authenticated, it’s time to incorporate a digital signature into the PDF. Digital signatures can be incorporated into PDF files in two different ways – using a Digital Signature Form Field or by signing the document with a Digital Signature Certifying Application (DSCA).

Digital Signature Form Fields are added directly to PDF documents and work like any other form field. To add a Digital Signature Form Field, simply select “Add Digital Signature” from the File menu in your application of choice (Adobe Reader is an excellent option for this). Once you have chosen where to place the Digital Signature Form Field on the document, you can use your Digital Certificate to sign it.

The alternative option is to use a Digital Signature Certifying Application (DSCA). DSCAs are applications specifically designed for the purpose of signing PDF documents and can be used to add Digital Signatures to any PDF document. Advantages of using a Digital Signature Certifying application include enhanced security, as well as an easy-to-use interface.

How does Certinal® patent technology help with Digital Signature Form Fields:

Certinal is proud to announce that the USPTO has granted Certinal e-signature a patent for Systems & Methods for Predicting and Moderating Signature Location Within Electronic Documents. USPTO Approved Electronic Signature are an essential part of identity verification, and having security when it comes to electronically signing documents is paramount in today’s digital world.

Our patented solution helps users identify the exact location within electronic documents where they should place their signature and provide assurance that these signatures will be securely verified. By utilizing AI technology, our application automatically detects relevant sections or artifacts within any given document, making it easier for users to quickly review where signatures are required. Additionally, this process better facilitates secure authentication as each user must attach their unique digital identity to the document before signing.

Ultimately, Certinal’s patented solution reduces the confusion and effort associated with signing documents electronically. It is an important step forward in providing enhanced security for users and organizations when making digital transactions. We are proud to be a leader in advancing the e-signature industry.


We invite you to join us as we strive to improve digital signature technology and revolutionize how people conduct business online! With our patented technology, you can confidently sign your documents knowing that the process is secure and seamless. Let’s make Digital Signatures work for you!

Certinal is a wholly owned subsidiary of Zycus, the pioneer in Cognitive Procurement. A familiar name and market leader with years of experience managing critical contracts & agreements, Zycus boasts of over Fortune 1000 enterprise clients and deployments of procurement and sourcing suite of products. Digital Signing has always been a focus area for Zycus. Thus, Certinal was born to offer a best-in-class Digital Transaction Management solution that will be easy to use, 100% secure to deploy, and legally compliant worldwide. We stand committed to providing a one-stop solution to large enterprise customers, compliant with various security standards and conforming to different regional regulations. Book a demo now!

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Aritra is an experienced marketing professional with over five years of expertise in various industries. He specializes in brand management, campaign design, demand generation, marketing process optimization, and PR. Aritra holds a master’s degree from Bennett University, and he has actively contributed to several student initiatives during his time there.
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