Prior art

U.S. Patent 7,461,353, titled "Scalable display of internet content on mobile devices," was issued on December 2, 2008. The patent describes systems and methods for providing resolution-independent scalable display of Internet (Web) content on mobile devices, allowing web pages to be scaled (zoomed) and panned for improved viewing on smaller screens. The technology involves processing original web content (HTML, XML, CSS) to generate scalable vector representations (e.g., SVF) which enable rapid rendering, zooming, and panning while maintaining the original layout.

The patent has been subject to various legal proceedings, including inter partes review (IPR) and ex parte reexamination, where some claims were found unpatentable. The Federal Circuit has clarified the scope of patent owner estoppel in related cases concerning this patent.

To identify the most relevant prior art, we need to examine the patent citations listed within US7461353B2. The patent document itself provides a list of "U.S. PATENT DOCUMENTS" and "FOREIGN PATENT DOCUMENTS" under the "References Cited" section.

Based on the provided patent text, here are some of the cited prior art references:

U.S. Patent Documents:

• US 5,966,135 A
  • Inventors: Roy et al.
  • Publication/Filing Date: October 1999 (Publication date)
  • Brief Description: The full description is not available in the provided text for US7461353B2, but generally, a patent listed as prior art would describe technology related to displaying or processing digital content, potentially on various devices, that predates the claimed invention of US7461353.
  • Potentially Anticipates: Without the full text of US 5,966,135 A, it is difficult to specify which claims it directly anticipates. However, given its presence as prior art, it likely relates to aspects of displaying content, perhaps concerning graphics rendering or managing display resolution, which could potentially anticipate claims relating to generating scalable content or rendering on different display sizes (e.g., claims generally directed to the system infrastructure of FIG. 1A, 1B, 1C or the client-side rendering described in block 120 and FIG. 6).

Other Publications:

• "A Zooming Web Browser" by Bederson et al., SPIE 1996.
  • Publication Date: 1996
  • Brief Description: This publication describes a "Zooming Web Browser," which directly relates to the core functionality of US7461353 concerning scalable display of web content. The concept of zooming in a web browser would be a direct antecedent to the invention.
  • Potentially Anticipates: This reference could potentially anticipate claims related to the overall concept of zooming and panning web content (e.g., claims covering the "zoom and pan" capability described in the client overview, or claims referring to rendering at user-selectable scaled resolutions and pan offsets in block 120 and FIG. 6).
• "Specification for Simple Vector Format (SVF) v1.1 Jan. 16, 1995" and "Specification for Simple Vector Format (SVF) v2.0 Dec. 6, 2000."
  • Publication Dates: January 16, 1995 (v1.1) and December 6, 2000 (v2.0)
  • Brief Description: These specifications describe the Simple Vector Format (SVF), which is explicitly mentioned in US7461353B2 as the format used for scalable vector representation. The patent itself notes that SVF was designed to handle a superset of commonly used file formats in CAD and was under consideration by the W3C for adoption as a standard for vector content on the World Wide Web.
  • Potentially Anticipates: These specifications would very likely anticipate claims relating to the use of SVF as a scalable vector representation for web content, or the conversion of HTML/XML into such a format (e.g., claims referring to HTML translator 58 generating a scalable vector representation, or claims describing the client-side viewer taking advantage of SVF power).
• "Scalable Vector Graphics (SVG) Specification, W3C Working Draft Feb. 11, 1999 WD-SVG-19990211."
  • Publication Date: February 11, 1999
  • Brief Description: This is a W3C Working Draft for Scalable Vector Graphics (SVG). SVG is another well-known vector format for graphics on the web, and its existence as a working draft prior to the priority date of US7461353B2 indicates the concept of scalable vector graphics for web content was known.
  • Potentially Anticipates: Similar to the SVF specifications, this could potentially anticipate claims regarding the use of scalable vector representations for Internet content, particularly those that broadly cover such formats beyond just SVF.

The patent document also mentions related applications, including U.S. application Ser. No. 09/878,097, filed Jun. 8, 2001 (now U.S. Pat. No. 7,210,099), and U.S. Provisional Application No. 60/211,019, filed Jun. 12, 2000, and U.S. Provisional Application No. 60/217,345, filed Jul. 11, 2000. These would be considered prior art if they have an earlier effective filing date and disclose subject matter claimed in 7461353 that is not common to the later-filed application. However, as 7461353 is a divisional and continuation-in-part of these, they represent the same inventive entity and thus are generally not considered prior art under 35 U.S.C. § 102 against the parent or related applications, but rather represent the lineage of the invention.

The description of prior art anticipation under 35 U.S.C. § 102 requires that a single prior art reference discloses every element of a claimed invention. Without a full claim set and the complete text of each prior art document, a definitive statement about anticipation of specific claims is not possible. However, the above analysis indicates potential areas of anticipation based on the titles and brief descriptions of the prior art.