US 8365799

US Patent 8,365,799, titled "Window covering configured to be magnetically attached to a window frame of a vehicle," was issued on February 5, 2013, from an application filed on March 17, 2011. The inventor is Victor Harris. The original assignee was NSV LLC, and the current assignee is NSV Group FZCO. The patent is active and is set to expire on May 17, 2031.

Abstract:
The patent describes a window covering designed for attachment to a vehicle's window frame to partially cover an opening. This covering includes a rigid casing with a ferromagnetic material, a panel attached to the casing that covers a central hole, and at least two permanent magnets. These magnets are magnetically attached to the casing's ferromagnetic members and are configured to be magnetically attached to the vehicle's window frame. The design ensures that the magnets exert a sufficient pull force to keep the window covering stationary relative to the window frame, even when the vehicle is in motion.

Plain-Language Overview of Independent Claims:

• Independent Claim 1: This claim describes a window covering for a vehicle's window frame. It specifies that the covering has a rigid casing with a first and a second member. Each member has an outer surface that defines a channel (the first channel faces generally opposite to the second channel). A panel covers the hole created by these members. The covering includes a first and a second permanent magnet, each with an outer magnet surface. These magnets are placed in their respective channels so their outer magnet surfaces are generally coplanar with the casing's outer member surfaces. The panel is designed to extend around the members and cover the magnets, preventing direct contact between the magnets and the window frame when installed. Crucially, these permanent magnets are configured to generate enough pull force to securely hold the window covering to the vehicle's window frame, ensuring it does not move during vehicle operation.

• Independent Claim 17: This claim describes a window covering system for a vehicle. It comprises a vehicle window frame, specifically noting a header and a footer, and the window covering described in Claim 1. The window covering is configured for attachment to both the header and the footer of the window frame to at least partially cover the opening between them. Similar to Claim 1, it details the casing with its first and second members and corresponding channels, the panel covering the magnets and protecting the window frame, and the first and second permanent magnets with coplanar outer surfaces. The core functionality is reiterated: the magnets exert a sufficient pull force to retain the window covering to the respective header and footer, preventing movement relative to the window frame during vehicle motion.

As of April 26, 2026, no litigation specifically involving US patent 8365799 is known based on the conducted search. The search included general patent litigation databases and resources, but no direct matches for cases asserting or challenging this particular patent number were found.

Proceedings overview

As of May 30, 2026, no AIA trial proceedings (Inter Partes Review, Post-Grant Review, or Covered Business Method) for US patent 8365799 are on file with the USPTO Open Data Portal, and none were found through web searches. This indicates that the patent has not been subjected to PTAB challenges, which may suggest a potentially unhardened patent from a PTAB perspective, or simply that its claims have not yet drawn such challenges.

Strategic summary

Currently, all claims of US patent 8365799 are UNTESTED by any AIA trial proceeding. This means there is no PTAB-generated estoppel landscape, as no challenges have been made. For a potential defendant, all prior-art grounds (including those under § 102 and § 103) remain available for a potential future PTAB petition, without any preclusive effects from previous proceedings. The absence of PTAB activity could imply that the patent has not been widely asserted in litigation that would typically prompt IPR filings, or that its claims are perceived as robust enough to deter such challenges.

Recommended next steps

If facing assertion of US patent 8365799, the absence of PTAB activity suggests that a defendant would have a "clean slate" to file a petition for Inter Partes Review (IPR) against the patent, assuming statutory deadlines and other requirements are met. There are no prior PTAB decisions to consider for claim validity or estoppel. The lack of prior challenges also means there are no existing panel decisions or reasoning to leverage, making the initial analysis of patentability grounds critical.

Inventors

The sole named inventor of US patent 8365799 is Victor Harris. At the time of filing on March 17, 2011, Victor Harris assigned his interest in the patent application to NSV LLC [cite: Reel 025970/0278], indicating NSV LLC was his employer or the entity to which he assigned his invention.

Original assignee

The original assignee named on the issued patent is NSV LLC. NSV is an active provider of automotive products and accessories, founded in 1990 in Dubai, United Arab Emirates. Their product offerings include a wide range of automotive accessories such as compressors, in-car entertainment systems, body kits, LED lighting, and "Laser Shades". While a French legal entity associated with NSV has a "Deadpooled" status, an Indian entity is active, and the broader NSV Group in Dubai actively develops and supplies automotive products to OEM vehicle manufacturers globally. NSV Group FZCO, the current assignee, also holds trademarks related to "UV SHADES" for vehicle window coverings, confirming a direct relation to the claimed invention.

Assignment timeline

• 2011-03-17 (executed) / recorded 2011-03-17 — Reel 025970/0278

  • Conveyance: ASSIGNMENT
  • Assignor: HARRIS, VICTOR
  • Assignee: NSV LLC
  • Correspondent: BROWNING & BROWNING, 5718 WESTHEIMER RD STE 1000, HOUSTON, TX 77057. This correspondent recurs in this chain.
  • Context: Initial assignment from inventor to original operating company.

• 2013-11-19 (executed) / recorded 2014-09-03 — Reel 033657/0528

  • Conveyance: ASSIGNMENT
  • Assignor: NSV LLC
  • Assignee: HARRIS, VICTOR
  • Correspondent: BROWNING & BROWNING, P.C., P.O. BOX 11847, HOUSTON, TX 77293-1847. This correspondent recurs in this chain.
  • Context: Transfer from original operating company back to the inventor.

• 2016-07-01 (executed) / recorded 2017-02-27 — Reel 041385/0055

  • Conveyance: ASSIGNMENT
  • Assignor: HARRIS, VICTOR
  • Assignee: NSV GROUP FZCO
  • Correspondent: BROWNING & BROWNING, P.C., P.O. BOX 11847, HOUSTON, TX 77293-1847. This correspondent recurs in this chain.
  • Context: Transfer from inventor to a related operating company (NSV GROUP FZCO).

Timeline diagram

timeline
    title Ownership of US 8365799
    2011 : Filed by Victor Harris
         : Assigned to NSV LLC
    2013 : Assigned to Victor Harris
    2014 : Recorded to Victor Harris
    2016 : Assigned to NSV Group FZCO
    2017 : Recorded to NSV Group FZCO
    2031 : Patent expires

NPE / troll-pattern signals

1. Shell-entity transfer — Not present. The transfers involve an operating company (NSV LLC), the inventor (Victor Harris), and another operating company (NSV Group FZCO) that actively develops and sells automotive accessories, including shades.
2. Known asserter in the chain — Not present. None of the assignors or assignees are listed on common NPE directories.
3. Repeat correspondent across the chain — Present. The law firm BROWNING & BROWNING, or BROWNING & BROWNING, P.C., is listed as the correspondent of record for all three assignments (Reel 025970/0278, Reel 033657/0528, Reel 041385/0055). While this firm appears to be an entertainment and corporate law firm, its consistent involvement across multiple transfers for this patent is a clear recurrence.
4. Cascading transfers — Not present. The assignments are spaced more than two years apart, specifically approximately 2 years and 8 months between the first and second, and 2 years and 7 months between the second and third, which does not constitute rapid cascading transfers.
5. Pre-litigation transfer — Not present. No litigation involving this patent is known as of April 26, 2026.
6. Bankruptcy fire-sale — Not present. There is no indication of bankruptcy for any entity in the assignment chain.
7. Privateering — Unclear. While the transfers occurred between related parties and the inventor, there is no public information to explicitly suggest a privateering arrangement.
8. Defensive aggregator (anti-NPE) — Not present. The current assignee is an operating company, not a defensive aggregator.

Verdict

Operating-company assertion

This verdict is reached with moderate confidence. While there is a repeat correspondent across all assignments (Browning & Browning, P.C., for Reel 025970/0278, Reel 033657/0528, and Reel 041385/0055), the entities involved in the transfers are either the inventor or active operating companies in the automotive accessories market. NSV LLC, the original assignee, and NSV Group FZCO, the current assignee, both operate in the automotive sector and produce related products, including shades. The transfer back to the inventor, Victor Harris (Reel 033657/0528), before being assigned to NSV Group FZCO (Reel 041385/0055), suggests internal business restructuring or continuity within a family of companies rather than a typical NPE shell game.

USPTO Assignment Center search for US8365799B2

To identify the most relevant prior art for US patent 8365799, I will examine the "Citations" and "Family Cites Families" sections provided in the patent text. These sections list prior art that was considered by the examiner or by third parties during the patent's prosecution.

Cited Prior Art for US Patent 8,365,799

Here is an analysis of the patent citations listed for US8365799B2, focusing on their potential relevance to claims under 35 U.S.C. § 102 (anticipation). The current date is April 26, 2026.

Patent Citations (Cited by Examiner)

• US2595833A

  • Full Citation: US2595833A, "Screening for vehicles"
  • Publication Date: 1952-05-06
  • Filing Date: 1951-05-11
  • Brief Description: This patent describes a screening device for vehicles. While the specific attachment mechanism isn't detailed, it broadly relates to vehicle screens.
  • Potential Anticipation (35 U.S.C. § 102): This reference might broadly anticipate the concept of a "window covering configured for attachment to a window frame of a vehicle to at least partially cover an opening" as stated in the preambles of claims 1 and 17. However, without more specific details on the attachment method, it's unlikely to anticipate the magnetic attachment or specific structural elements of the casing and magnets.

• US3679505A

  • Full Citation: US3679505A, "Magnetic insect screen"
  • Publication Date: 1972-07-25
  • Filing Date: 1971-02-09
  • Brief Description: This patent describes a magnetic insect screen, suggesting the use of magnets for attachment.
  • Potential Anticipation (35 U.S.C. § 102): This reference is highly relevant as it explicitly mentions a "magnetic insect screen." This could potentially anticipate the use of magnets for attachment to a frame (though not necessarily a vehicle window frame or the specific casing/magnet configuration) as broadly recited in claims 1 and 17, particularly the aspect of magnets being configured to be magnetically attached to a frame.

• US3805872A

  • Full Citation: US3805872A, "Magnetically attached cover"
  • Publication Date: 1974-04-23
  • Filing Date: 1972-07-20
  • Brief Description: This patent generally describes a magnetically attached cover.
  • Potential Anticipation (35 U.S.C. § 102): Similar to US3679505A, this reference broadly anticipates the concept of a cover that is magnetically attached. Its relevance would depend on the specific details of the magnetic attachment, the type of cover, and the frame it attaches to, which are not detailed in the brief description. It could potentially anticipate the broad concept of magnetic attachment for a covering in claims 1 and 17.

• US4409758A

  • Full Citation: US4409758A, "Perimeter strip for magnetically attractable extruded plastic window system"
  • Publication Date: 1983-10-18
  • Filing Date: 1981-03-12
  • Brief Description: This patent describes a perimeter strip for a magnetically attractable extruded plastic window system. This suggests a more structured approach to magnetic attachment within a window system.
  • Potential Anticipation (35 U.S.C. § 102): This reference is significant as it describes a "magnetically attractable... window system" with a "perimeter strip." This could potentially anticipate aspects of the casing and its magnetic attachment to a window frame, particularly where the casing itself or an auxiliary component provides a magnetic attraction point. This may be relevant to the casing elements of claims 1 and 17, particularly the concept of a ferromagnetic material in the casing (if the "magnetically attractable" aspect implies a ferromagnetic material).

• US4561223A

  • Full Citation: US4561223A, "Panel fastener system and retaining member"
  • Publication Date: 1985-12-31
  • Filing Date: 1983-02-03
  • Brief Description: This patent describes a panel fastener system and retaining member. While not explicitly magnetic in this brief description, it pertains to panel attachment and retention.
  • Potential Anticipation (35 U.S.C. § 102): This reference may be relevant to the "panel operatively attached to each of the first member and the second member and covering the hole" aspect of claims 1 and 17, particularly the general concept of retaining a panel. Its anticipation of the magnetic features would depend on further details not present in the title.

• US4802523A

  • Full Citation: US4802523A, "Blanket shade for window frame"
  • Publication Date: 1989-02-07
  • Filing Date: 1983-07-13
  • Brief Description: This patent describes a blanket shade for a window frame.
  • Potential Anticipation (35 U.S.C. § 102): This reference is relevant to the "window covering configured for attachment to a window frame" preamble of claims 1 and 17. However, without details on the attachment mechanism, it is unlikely to anticipate the magnetic features.

• US5090469A

  • Full Citation: US5090469A, "Window screen apparatus and method for making"
  • Publication Date: 1992-02-25
  • Filing Date: 1990-01-08
  • Brief Description: This patent describes a window screen apparatus and a method for making it.
  • Potential Anticipation (35 U.S.C. § 102): This reference broadly relates to window screens, similar to US2595833A. It may anticipate the general concept of a window covering but lacks specifics on magnetic attachment.

• US6073675A

  • Full Citation: US6073675A, "Self installable and simply removable window screen"
  • Publication Date: 2000-06-13
  • Filing Date: 1999-03-26
  • Brief Description: This patent describes a self-installable and removable window screen.
  • Potential Anticipation (35 U.S.C. § 102): The "self installable and simply removable" aspect could be seen as a functional overlap with the ease of magnetic attachment and detachment emphasized in the detailed description of US8365799B2. However, it does not explicitly disclose magnetic attachment.

• CN2635422Y

  • Full Citation: CN2635422Y, "Magnetic ventilating gauze window of wagon type automobile"
  • Publication Date: 2004-08-25
  • Filing Date: 2003-06-12
  • Brief Description: This Chinese utility model describes a magnetic ventilating gauze window specifically for a wagon-type automobile.
  • Potential Anticipation (35 U.S.C. § 102): This is a highly relevant piece of prior art. It explicitly discloses a "magnetic ventilating gauze window of wagon type automobile," which directly addresses a vehicle window covering with magnetic attachment and a mesh-like panel. This could potentially anticipate many aspects of claims 1 and 17, especially the core concept of a magnetically attached window covering for a vehicle, and the use of a mesh panel (if "gauze" is interpreted as such). The specific configuration of magnets within channels and coplanar surfaces would need to be investigated.

• US20050264032A1

  • Full Citation: US20050264032A1, "Removable awning for substantially preventing entrance of falling material through an opening of a vehicle or other enclosure"
  • Publication Date: 2005-12-01
  • Filing Date: 2004-05-27
  • Brief Description: This patent application describes a removable awning for preventing material entry into a vehicle opening. While it's a "removable awning," the method of attachment isn't specified as magnetic in the title.
  • Potential Anticipation (35 U.S.C. § 102): This broadly relates to removable coverings for vehicle openings. Without specific details on the attachment mechanism, it's unlikely to anticipate the magnetic aspects of US8365799B2.

• US20100300036A1

  • Full Citation: US20100300036A1, "Retention assembly for retaining a panel in a window or a door"
  • Publication Date: 2010-12-02
  • Filing Date: 2005-07-11
  • Brief Description: This patent application describes a retention assembly for a panel in a window or door.
  • Potential Anticipation (35 U.S.C. § 102): This reference addresses retaining a panel in a window or door. Its relevance to US8365799B2 depends on the specific retention mechanism. If it involves magnetic retention, it would be highly relevant to claims 1 and 17.

• US20090183844A1

  • Full Citation: US20090183844A1, "Magnetically attachable window screen system"
  • Publication Date: 2009-07-23
  • Filing Date: 2007-02-20
  • Brief Description: This patent application describes a magnetically attachable window screen system.
  • Potential Anticipation (35 U.S.C. § 102): This is another highly relevant piece of prior art. It directly discloses a "magnetically attachable window screen system." This could potentially anticipate the core magnetic attachment concept, the screen-like panel, and the "system" aspect of claim 17. The specific arrangement of magnets in channels and coplanar surfaces would need to be compared in detail to assess the full extent of anticipation.

Family Cites Families (Cited by Third Party)

These references are from other patent families that cite the family of US8365799B2. While the direct citations above are usually considered more direct prior art by examiners, these "family cites" can also be relevant for broader understanding of the inventive landscape.

• US3016952A

  • Full Citation: US3016952A, "Automobile window screen"
  • Publication Date: 1962-01-16
  • Filing Date: 1959-01-21
  • Brief Description: Describes an automobile window screen.
  • Potential Anticipation (35 U.S.C. § 102): Broadly covers automobile window screens, potentially anticipating the general scope of "window covering for a vehicle" in claims 1 and 17, but without specific magnetic attachment details.

• US3670798A

  • Full Citation: US3670798A, "Vehicle screen"
  • Publication Date: 1972-06-20
  • Filing Date: 1970-08-12
  • Brief Description: Describes a vehicle screen.
  • Potential Anticipation (35 U.S.C. § 102): Similar to US3016952A, this broadly relates to vehicle screens.

• US4079558A

  • Full Citation: US4079558A, "Magnetic bond storm window"
  • Publication Date: 1978-03-21
  • Filing Date: 1976-01-28
  • Brief Description: Describes a storm window attached by a magnetic bond.
  • Potential Anticipation (35 U.S.C. § 102): This reference is highly relevant as it describes "magnetic bond" for a "storm window." While not specifically for a vehicle, the core concept of magnetic attachment for a window covering is directly addressed. This could potentially anticipate the magnetic attachment features of claims 1 and 17.

• US4139233A

  • Full Citation: US4139233A, "Screen for the window at the top of a vehicle door"
  • Publication Date: 1979-02-13
  • Filing Date: 1976-09-22
  • Brief Description: Describes a screen specifically for the top of a vehicle door window.
  • Potential Anticipation (35 U.S.C. § 102): This is relevant to the "window covering for a vehicle" aspect of claims 1 and 17 and specifies a particular location on a vehicle door. The method of attachment would need to be reviewed to determine anticipation of magnetic features.

• US5280991A

  • Full Citation: US5280991A, "Headliner"
  • Publication Date: 1994-01-25
  • Filing Date: 1992-02-19
  • Brief Description: This patent describes a headliner, which is an interior roof lining of a vehicle.
  • Potential Anticipation (35 U.S.C. § 102): This is generally related to vehicle interiors but not directly to window coverings. Unlikely to anticipate claims 1 or 17.

• GB2312612B

  • Full Citation: GB2312612B, "Apparatus for supporting a fabric over an aperture"
  • Publication Date: 2000-03-29
  • Filing Date: 1996-05-03
  • Brief Description: Describes an apparatus for supporting fabric over an aperture.
  • Potential Anticipation (35 U.S.C. § 102): This broadly relates to supporting fabric over an opening, which could be a window. If the support mechanism involves magnets, it would be more relevant to claims 1 and 17.

• US5984405A

  • Full Citation: US5984405A, "Vehicle screen"
  • Publication Date: 1999-11-16
  • Filing Date: 1997-12-24
  • Brief Description: Describes a vehicle screen.
  • Potential Anticipation (35 U.S.C. § 102): Similar to other general vehicle screen patents, this would broadly cover the "window covering for a vehicle" aspect.

• US6257307B1

  • Full Citation: US6257307B1, "Magnetic customized garage door screen enclosure"
  • Publication Date: 2001-07-10
  • Filing Date: 1999-08-26
  • Brief Description: Describes a magnetic customized garage door screen enclosure.
  • Potential Anticipation (35 U.S.C. § 102): This is highly relevant as it explicitly uses "magnetic" for a "screen enclosure." While for a garage door, the principles of magnetic attachment for a screen are similar and could anticipate aspects of the magnetic attachment and panel in claims 1 and 17, specifically the concept of using magnets to retain a screen-like covering.

• US7631682B2

  • Full Citation: US7631682B2, "Retractable window covering having a length expanding stiffening rod"
  • Publication Date: 2009-12-15
  • Filing Date: 2006-07-21
  • Brief Description: Describes a retractable window covering with a stiffening rod.
  • Potential Anticipation (35 U.S.C. § 102): This patent describes a retractable window covering with a "stiffening rod," which could be comparable to the "rigid casing" mentioned in claims 1 and 17. However, it does not explicitly mention magnetic attachment.

• US8051536B2

  • Full Citation: US8051536B2, "Magnetic drapery track"
  • Publication Date: 2011-11-08
  • Filing Date: 2007-04-16
  • Brief Description: Describes a magnetic drapery track.
  • Potential Anticipation (35 U.S.C. § 102): This reference is relevant for the "magnetic" aspect of attachment for a covering. While it is for drapery, the principle of using a magnetic track for retention could be seen as anticipating the magnetic attachment and retention aspects of claims 1 and 17.

Summary of Most Relevant Prior Art:

Based on the titles and brief descriptions, the most relevant prior art references that could potentially anticipate claims in US8365799B2 under 35 U.S.C. § 102, particularly concerning the magnetic attachment to a vehicle window frame, are:

• CN2635422Y ("Magnetic ventilating gauze window of wagon type automobile"): This reference directly describes a magnetic, ventilating, gauze window for an automobile, making it highly relevant to the core invention of US8365799B2, especially for claims 1 and 17, including the panel type.
• US20090183844A1 ("Magnetically attachable window screen system"): This also directly describes a magnetically attachable window screen system, which is very similar to the invention, particularly for claims 1 and 17.
• US3679505A ("Magnetic insect screen"): While not specific to vehicles, the concept of a magnetic insect screen is directly relevant to magnetic attachment of a screen-like covering.
• US3805872A ("Magnetically attached cover"): Broadly relevant for the concept of magnetically attached covers.
• US4079558A ("Magnetic bond storm window"): Relevant for the concept of magnetic attachment for a window covering.
• US6257307B1 ("Magnetic customized garage door screen enclosure"): Relevant for the concept of magnetic attachment for a screen enclosure.

These patents and applications would need a more detailed claim-by-claim comparison to fully assess the extent of anticipation, focusing on specific features like the rigid casing, channels for magnets, coplanar surfaces of magnets and casing, and the panel covering the magnets.

Obviousness Analysis under 35 U.S.C. § 103 for US Patent 8,365,799

This analysis identifies combinations of prior art references that would render the claims of US Patent 8,365,799 obvious to a person having ordinary skill in the art (POSITA) at the time of the invention (priority date: March 17, 2011). The core inventive concept of US'799 is a rigid window covering for a vehicle that magnetically attaches to the window frame, with the magnets recessed and covered by a panel to prevent scratching, and exerting sufficient pull force to remain stable during vehicle motion.

Independent Claim 1 Analysis

Independent Claim 1 defines a window covering with specific features: a rigid casing with first and second members defining channels, a panel covering a hole and extending over magnets, and permanent magnets disposed in the channels such that their outer surfaces are coplanar with the casing's outer surfaces. These magnets are configured for magnetic attachment to the vehicle's window frame and exert a sufficient pull force to prevent movement during vehicle operation.

Combination of Prior Art References:

A strong case for obviousness can be made by combining the teachings of US2595833A (Flaherty), US20090183844A1 (Boulos), and US3805872A (Lorber Flinck Co.).

1. US2595833A (Flaherty): This patent, titled "Screening for vehicles," clearly teaches a "screen for motor vehicles which is adapted to be removably secured in the window opening and to be held in position by the magnetic attraction between the frame of the screen and the metal frame of the window opening." [cite: Flaherty, Abstract] This directly addresses the concept of a window covering (screen) for a vehicle, magnetically attached to the window frame, and implies sufficient holding force for vehicle use. The screen includes a frame (casing) and screen material (panel).

2. US20090183844A1 (Boulos): Titled "Magnetically attachable window screen system," Boulos teaches a "window screen, a rigid frame, and a plurality of magnets provided along the perimeter of the rigid frame." [cite: Boulos, Abstract] While not explicitly vehicle-specific, Boulos introduces the critical element of a rigid frame and the placement of magnets along the perimeter.

3. US3805872A (Lorber Flinck Co.): This patent, "Magnetically attached cover," describes a cover with an "outer peripheral border portion formed as a pocket in which a flexible magnetic strip is held." [cite: Lorber Flinck, Abstract] This teaches the concept of covering or concealing magnets within a border or panel, preventing direct contact with the attachment surface.

Motivation for Combination:

A POSITA would be motivated to combine these references as follows:

• Flaherty + Boulos: A POSITA, seeking to improve the durability, stability, and aesthetic fit of the magnetically attached vehicle screen taught by Flaherty, would be motivated to incorporate the rigid frame and perimeter magnet arrangement disclosed in Boulos. A rigid frame would offer a more robust structure than a potentially less rigid frame, providing a more consistent fit and better performance in a dynamic vehicle environment.
• Resulting combination + Lorber Flinck: Given a rigid, magnetically-attached vehicle screen, a POSITA would further be motivated to cover the exposed magnets to prevent scratching or damage to the vehicle's window frame, or for aesthetic purposes. Lorber Flinck provides a clear teaching of enclosing magnets within a peripheral border or pocket for such protective or aesthetic benefits. This directly addresses the '799 patent's stated advantage of preventing scratching and retaining the magnets within the covering.

Addressing Specific Claim Limitations with the Combination:

• Casing with channels and coplanar magnet surfaces: The combination of Boulos's rigid frame with magnets along the perimeter and known prior art teaching recesses for magnets (e.g., US4409758A (Plaskolite) teaching a rigid plastic frame with a recess for a magnetic strip, or US4561223A (Defender Energy) teaching a retaining member with a groove for a magnetic strip) would make it obvious to a POSITA to integrate magnets into channels within the rigid frame. Configuring the magnets to be coplanar with the outer surface of the frame members is a common design choice for flush mounting, improved aesthetics, and effective magnetic contact.
• Ferromagnetic material in casing (Claim 9): While not explicitly stated in the primary combination, the '799 patent's description clarifies that the casing includes a ferromagnetic material, and the magnets are "magnetically attached to the first member" [cite: US8365799B2, Description, "the first magnets 32 a are magnetically attached to the first member 34"]. Given that permanent magnets are to be housed and secured within the casing, fabricating the casing (or at least the portions surrounding the magnets) from a ferromagnetic material like steel (as taught by Claim 9 and the '799 patent description [cite: US8365799B2, Description, "The ferromagnetic material 43 may be steel, such as mild steel, and the like."]) would be an obvious engineering choice for a POSITA to help retain the magnets within the casing due to magnetic attraction.
• Permanent magnets, rare earth metals (Claims 3-5): The choice of permanent magnets, specifically strong rare-earth magnets like neodymium (neodymium-iron-boron alloy), would be an obvious optimization for a POSITA seeking to maximize the pull force while minimizing magnet size, especially for an application requiring secure retention during vehicle motion. Neodymium magnets were independently discovered in 1984 and were commercially available and recognized as the strongest type of permanent magnet well before the 2011 priority date of US'799.
• Sufficient pull force for vehicle motion: Flaherty's disclosure of magnetic attachment for a vehicle screen inherently suggests a pull force sufficient for vehicle operation. The precise numerical values for magnet area or tolerance (Claims 6, 7) are design choices and optimization parameters, not inventive steps.

Independent Claim 17 Analysis

Independent Claim 17 describes a "window covering system" comprising a vehicle window frame (including a header and a footer) and the window covering of Claim 1, with the magnets specifically configured for attachment to the header and footer.

Obviousness:

Claim 17 incorporates all the features of Claim 1 and specifies their application within a system context of a vehicle window frame having a header and footer. As argued above, the window covering itself, with its rigid frame, recessed/covered magnets, and sufficient holding force, is rendered obvious by the combination of Flaherty, Boulos, and Lorber Flinck.

The additional specification of attachment to a "header and a footer" is also obvious. Vehicle window frames naturally define an opening with upper (header) and lower (footer) sections. Attaching a window covering at these points is the most logical and effective way to secure it to cover the opening. Flaherty's "removably secured in the window opening" [cite: Flaherty, Abstract] inherently covers attachment to the perimeter, including the header and footer. Similarly, Hess (US3670798A), describing a "window screen for attachment to a vehicle window opening and including a flexible frame carrying magnetic strips along its perimeter for magnetic attachment to the metal window frame," [cite: Hess, Abstract] implies attachment to the entire frame perimeter, including header and footer.

Dependent Claims 2, 8, 11-16 Analysis

• Claim 2 (Third and Fourth Members for Casing): Adding third and fourth members to form a complete, generally rectangular frame is a basic and obvious design choice for constructing a rigid casing that defines a hole and holds a panel, as seen in many existing window screens (e.g., Flaherty's frame 10).
• Claim 8 (Ledge on Magnet): A ledge on a block-shaped magnet is a minor structural design feature that a POSITA could implement for various reasons (e.g., aiding in magnet retention within a channel, or for aesthetic purposes). This is a routine design modification.
• Claims 11 & 12 (Panel Details): These claims elaborate on the panel's structure, including a covering portion and a border. These details are consistent with the teachings of Lorber Flinck regarding a border covering the magnets and are standard components for fabric window coverings.
• Claims 13-16 (Attachment Clips): These claims describe attachment clips with a ferromagnetic strip, particularly for use when the window frame is non-ferromagnetic, and further detail the clip's design with grooves, walls, shelves, and ramps. The use of an auxiliary ferromagnetic strip or clip to enable magnetic attachment to a non-magnetic surface is a well-known engineering solution. For example, Plaskolite (US4409758A) teaches a "perimeter strip for magnetically attractable extruded plastic window system" which uses a rigid plastic frame to house a magnetic strip. Defender Energy (US4561223A) also shows a "retaining member" with a "groove configured to hold a magnetic strip" for removable panel attachment. The specific geometric features (grooves, walls, shelves, ramps) described in Claims 15 and 16 represent routine design choices for securing the ferromagnetic strip and facilitating the attachment/detachment of the window covering, which a POSITA would readily implement.

In summary, the key elements of US Patent 8,365,799 are individually taught in the cited prior art, and the combination of these elements for a vehicle window covering is motivated by common design goals such as durability, scratch prevention, and robust attachment under dynamic conditions.