July 2009
What's New at GIS?

GIS is pleased to announce an alliance with a 3rd party company specializing in full-chip circuit reverse engineering. GIS has specialized in the extraction of specific, localized circuits to support individual patents but for some of our customers larger portions or full-chip extraction is of interest. By adding this service, GIS can now help these clients in an efficient and cost effective manner.

Prior Art Searches at GIS

One of GIS’ specialties is finding prior art. In fact, when looking for prior art on specific patent reads, our success rate is over 80%.

Over the years GIS has developed a methodology that differs from other search companies in being both efficient and delivering only the information you need. For many search companies, the deliverable is enormous amounts of references that you have to sort through yourself. Other companies will first conduct a database search, turning up a large number of documents that they examine for you. However, the large number of documents that must be reviewed can eat through your budget without providing the “best reference needed”.

GIS uses a very selective approach. Starting with a “field of use” search, a small number of specific and relevant documents are identified and this path of research is further followed. This may in turn uncover new documents, which may lead to further documents. The end result is one or a handful of relevant prior art references as well as the search path taken. You receive a small, manageable number with the text of interest identified. The process is quick and efficient, and having the search path documented, it is easy to continue the search at a later date if necessary.

Often, before you come to GIS for prior art searches, you will have done some searching on your own. To take this into account, we will keep you up to date on our progress in order that we may combine our knowledge with yours to ensure that the same searching is not repeated unnecessarily. It also gives you the option of shortening or extending the search time based on the results discovered to gain the maximum benefit from your limited budget.  

GIS Presents a Solution for Probing Modern Multi-Chip Packages

Modern Multi-Chip Modules (MCM) can cause all manner of problems for signal probing. Jet-etching is a tried and true method for gaining access to critical signals while leaving the components in the package operational. But what options does an Engineer have when jet-etching is not feasible?

 

In the figure above we see an example of a complex MCM that was recently tested at GIS. The MCM device’s construction can be described as a pair of two-die MCMs that are mounted face-to-face together within the same package. This construction gives it a complex vertically stacked arrangement in which the top-most PCB effectively blocks probing attempts from above. In addition, the uppermost component of the module is an integrated PCB that is very vulnerable to acids and thus frustrates attempts at exposing probe-points using Jet-Etching.

Using a micro-milling machine the challenge was overcome. Although this type of de-capsulation is not an option when the top-most component is a die or something equally fragile, the micro-milling machine was determined to be the ideal tool for this application. A PCB’s hardy construction is very forgiving to slight over-etching which inevitably happens during the milling process. Using X-rays of the component, we determined the position of the bondwires and milled a window that stayed well clear of them. The result is a clear ,easy access window full of valuable probe points. Using this process also carries the additional benefit of being much more robust to probing and contamination than an exposed die.  

From the “Patent Corner”

On April 20-23, three of GIS’ staff wrote the Canadian Patent Agent exams. Each of the four exams is 4 hours long and cover drafting, validity, prosecution, and infringement*. The exams are renowned for their difficulty with first try pass rates around 5%. Our candidates will be keeping their fingers crossed for when the results are released in the fall.

GIS is unique among patent analysis and reverse engineering companies in having a registered patent agent on staff as well as having an active program to train our technical consulting staff to become registered patent agents. It is part of the GIS philosophy that a high level of both patent and technical expertise is required to provide the quality patent services we are proud of.

*Canadian patent agents not only draft and prosecute patents but may also give an opinion as to whether the claims of an issued patent are infringed or are valid.
Did You Know?

GIS has an active R&D program to develop new reverse engineering techniques to keep up with technology or to simply find a better way of doing something that is not presently cost effective. Presently projects include:

  • Data recovery from Flash file systems
  • Wet chemistry chip delayering
  • Wireless testing
What We Can Do For You...

Patent Portfolio Mining
Patent Reviews
Patent Product Mapping
Product Procurement
Patent Infringement Analysis
Prior Art Searches
Technical Rebuttal
Trial Witness
Patent Valuation
Patent Portfolio Appraisal
Patent Landscape
Patent Divestiture
Patent Acquisition

Contact GIS

120 Iber Road Unit 101
Stittsville, Ontario K2S 1E9
Canada
Phone:+ 1(613) 592-2693
Fax: + 1 (613) 592-0784

www.gistrategies.com

sales@gistrategies.com

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