Reexamination Control No. 90/005,742
Patent 5,253,341
1 ‘341 patent, abstract.50 Specifically, the examiner contends that
2
3 the use of [a] asymmetric decompression technique corresponding to an
4 inverse operation of the technique used to compress is inherent [in
5 Walter[, as] evidenced by . . . patentee's statement in the abstract of the
6 instant patent[:] "The UES provides appropriate inverse processing (e.g.
7 data compression) which by its nature, requires relatively little processing
8 power to accomplish. Thus, the method of the invention exploits the
9 inherent asymmetry of the overall process . . . ."
10
11 3d Action at 95-96; Final Action at 250-51. Dr. Koopman denies that all compression and
12 inverse decompression techniques are inherently asymmetric. 2d Koopman Decl. at 184,
13 para. 397 (citing paragraphs 249-51 and 337-40 of that declaration, which specifically address
14 the now-withdrawn § 112, first paragraph, rejection of claim 101 for lack of written description
15 support). In that cited testimony, Dr. Koopman explains that only some compression and inverse
16 decompression techniques are asymmetric:
17 [S]ome compression/decompression systems have the property that
18 compression takes markedly more computational power than
19 decompression ("markedly" typically means by integer multipliers of time
20 for a given CPU speed); these are asymmetric systems. A typical instance
21 of an asymmetric technique is one for continuous-tone imagery such as
22 JPEG. Some compression/decompression systems have the property that
23 compression takes the same amount of time as decompression; these are
24 symmetric systems. An example of a symmetric technique is one for
25 monochrome graphical data such as CCITT compression or run-length
26 encoding. As mentioned previously, both JPEG and CCITT are taught by
27 [the '341 patent].
28
29 2d Koopman Decl. at 119-20, para. 250.51 In support, Dr. Koopman (2d Koopman Decl. at 120,
30 para. 251) cited a definition that reads in part: "asymmetric compression: A data compression
50 Similar language appears at column 2, lines 35-44.
51 The examiner did not address the merits of this testimony. Instead, he responded to
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