Obviousness

Obviousness Analysis under 35 U.S.C. § 103 for US Patent 9,242,502

To determine obviousness under 35 U.S.C. § 103, one must consider whether the differences between the claimed invention and the prior art would have been obvious to a person having ordinary skill in the art (PHOSITA) at the time the invention was made. This analysis involves the Graham factors: (1) determining the scope and content of the prior art; (2) ascertaining the differences between the prior art and the claims at issue; (3) identifying the level of ordinary skill in the pertinent art; and (4) considering secondary considerations of non-obviousness (though these are not part of the examiner's initial burden). A patent claim may be deemed obvious if the results are predictable from established functions in the prior art, and an explicit teaching, suggestion, or motivation to combine references is not always required.

The patent US9242502 claims an identification document with a translucent security element in a thinner region of a non-transparent core, which cannot be seen in normal lighting but is visible under backlighting, and contains a non-transparent element. The method claim 11 describes the process of creating such a document.

Level of Ordinary Skill in the Art

A person having ordinary skill in the art (PHOSITA) in this field would likely have a background in materials science, printing technologies, and security document manufacturing. They would be familiar with various lamination techniques, laser engraving, and different types of security features used in identification documents, such as those that are transparent, translucent, or incorporate embedded elements.

Analysis of Independent Claims

Independent Claim 1

Claim 1 describes an identification document comprising:

1. A non-transparent core on the upper or lower surface of which a photo or information is arranged.
2. One or more layers of a transparent material arranged on at least a back or a front surface of said core.
3. A translucent security element in the form of a thinner region where the thickness of the non-transparent core material is smaller, but not equal to zero, as compared to the thickness of the non-transparent core material in other parts of said core.
4. A non-transparent element located in said thinner region such that the translucent security element cannot be seen in normal lighting conditions from an upper surface of the identification document, and if the upper surface is viewed in backlighting conditions, the translucent security element can be seen from the upper surface.

Independent Claim 11

Claim 11 describes a method of producing an identification document, comprising:

1. Producing a core of a non-transparent material having a security element by forming a thinner region where the thickness of the non-transparent core material is smaller, but not equal to zero, as compared to the thickness of the non-transparent core material in other parts of said core.
2. Arranging a photo or information on the upper or lower surface of said core of non-transparent material.
3. Placing a non-transparent security element in said thinner region located in said thinner region such that the translucent security element cannot be seen in normal lighting conditions from an upper surface of the identification document, and if the upper surface is viewed in backlighting conditions, the translucent security element can be seen from the upper surface.
4. Arranging the layers such that one or more layers of a transparent material are arranged on at least a front surface or a back surface of said core.

Obviousness Combinations

Several prior art references individually or in combination could render the claims of US9242502 obvious. The core concept revolves around creating areas of varying translucency in an identification document to reveal hidden security features under specific lighting conditions.

Combination 1: US4579754A in view of US3414998A and general knowledge of ID document manufacturing.

• US4579754A (Maurer): This patent describes an identification card with laser-inscribed indicia. While it focuses on laser inscription, it acknowledges the concept of embedding information within layers of an identification card for security purposes. It specifically discusses identification cards with "laser inscribed indicia" and a "method of producing it". The document emphasizes placing information "deep inside the document on layers which cannot be reached unless the document is broken into parts."

• US3414998A (Berger): This patent describes a counterfeit-proof, encapsulated identification card. It details a multi-layered identification card construction designed for security. The card is "encapsulated" and "counterfeitproof".

• Motivation to Combine: A PHOSITA would be motivated to combine the multi-layered security document concept of Berger with the embedded information approach of Maurer to create a more robust security document. The desire to make forgery more difficult is a long-standing problem in the field of identification documents. The general knowledge in the art includes using transparent layers over a non-transparent core and embedding security features within.

  A PHOSITA, seeking to enhance the security of an identification document by making embedded information verifiable without deconstruction, would consider creating a region that is less opaque than the surrounding core. Reducing the thickness of the non-transparent core material in a specific region, as described in US9242502, to create a translucent security element that is revealed under backlighting, would be a predictable modification. This is a known method to allow light to pass through otherwise opaque or less transparent materials, thus revealing embedded features. The "non-transparent element" within this translucent region would simply be the embedded information or photo described in Maurer, now visible under specific lighting conditions due to the thinned core.

  The key aspect of the thinner region being "not equal to zero" implies a translucent, rather than fully transparent, effect. This modification offers a security advantage over a completely transparent window by making the feature harder to detect in normal light. The concept of making a region of a document more translucent to reveal a hidden feature is a common design choice for security documents, as evidenced by later patents such as US10479128B2 which describes a "transparent ultraviolet blocking agent positioned within the region of a transparent window" to make a pattern visible only from one side under UV light. While US10479128B2 is later art, it reflects the ongoing motivation to create layered security features with selective visibility.

Combination 2: WO2004074000A1 in view of US20050247794A1 and general knowledge of using transparent layers and varied material properties.

• WO2004074000A1 (Sdu Identification B.V.): This document describes an identity card and travel document that incorporates security features within its layers.

• US20050247794A1 (Jones): This patent application describes an identification document having intrusion resistance, often achieved through multi-layered structures and embedded elements. It highlights the need for effective countermeasures against forgery that are cost-effective. It also discusses non-visible indicia made with ultraviolet or infrared ink that can be provided on a major card surface, along the perimeter, or extend through the entirety of the card, visible from both sides when extending through the card.

• Motivation to Combine: A PHOSITA, aiming to improve the intrusion resistance and verifiability of security features in identity documents (as per Jones), would consider integrating elements that are hidden but revealable. The document in WO2004074000A1 already details an identity card with embedded features. To make these embedded features more secure and verifiable without damaging the document, a PHOSITA would be motivated to create a region where the overlying opaque material is thinner, allowing for selective visibility.

  The idea of a "translucent security element" where the core material's thickness is reduced to make it translucent is an obvious way to implement a hidden-yet-verifiable security feature. This directly addresses the need for intrusion resistance by providing a tamper-evident feature. The non-transparent element within this thinned region would logically be the indicia or other security features already contemplated in Jones, now presented in a manner that requires backlighting for verification, adding another layer of security. The concept of having a "transparent window" in a security document to reveal underlying features is also present in prior art, such as US12269286 and US12227021.

General Obviousness Arguments for Claims 1 and 11:

The core inventive step claimed by US9242502 lies in combining:

1. A non-transparent core with transparent layers.
2. A thinned region in the non-transparent core, making it translucent (but not fully transparent).
3. A non-transparent element within this thinned, translucent region.
4. The specific functionality that the translucent security element (and the non-transparent element within it) is only visible under backlighting, not normal lighting.

Many elements are individually present in the prior art:

• Multi-layered identification documents with transparent outer layers and an opaque core: This is a fundamental concept in identification document manufacturing, as acknowledged in the background of US9242502 itself, stating, "An identification document typically consists of a non-transparent core surrounded by one or more transparent surface layers."
• Embedded security elements: Patents like Maurer (US4579754A) and Berger (US3414998A) clearly teach placing information or security features within the layers of an identification document.
• Varying translucency/opacity for security: The general concept of controlling light transmission through different parts of a security document to reveal hidden information is known. For example, "transparent windows" in security documents are known (e.g., US12269286, US12227021). While a "thinner region" is specified, a PHOSITA would recognize that reducing the thickness of an opaque material inherently increases its translucency, and conversely, increasing transparency by filling a cavity with transparent material (as described in dependent claims 3, 4, and 5 of US9242502) is a known technique to create visual effects in layered structures.
• Hidden features revealed under specific conditions (e.g., backlighting): The idea of a security feature not being visible under normal conditions but becoming visible under specific illumination (e.g., UV light in US10479128B2, or backlighting for watermarks) is a common security practice. The use of backlighting to reveal hidden features in laminated documents is a predictable application of optical principles.

The motivation for a PHOSITA to combine these elements would be to create a more sophisticated and difficult-to-forge identification document. By making a portion of the non-transparent core thinner, a PHOSITA would understand that the opacity in that region would decrease, allowing for a translucent effect under backlighting. Placing a non-transparent element (such as a laser-engraved photo or marking, as taught by Maurer) within this thinned region provides a verifiable security feature that is concealed in normal viewing but revealed when specifically illuminated, making forgery harder to detect. This combination simply applies known principles of optics and material manipulation to enhance existing security document designs, offering a predictable outcome of improved security. The "common sense" approach articulated in KSR Int'l Co. v. Teleflex Inc. suggests that combining familiar elements according to known methods is likely to be obvious, especially when the results are predictable.