Communication Components Antenna Inc v Rosenberger Hochfrequenztechnik GmbH & Co. KG (2026)

Summary

“The Plaintiff – M/s. Communication Components Antenna Inc. has filed the present suit seeking a permanent injunction restraining infringement of Indian Patent No.240893 (hereinafter ‘IN'893/ suit patent’) along with damages/rendition of accounts of profits, delivery up etc.” (para 2) “The Defendants in the suit are Defendant No. 1 - M/s. Rosenberger Hochfrequenztechnik GmbH & Co. KG, a German company and its Indian entities.” (para 5) Of the invention, “The technical solution, being the deliberate introduction of asymmetry into beam patterns, is also disclosed in the Complete Specification.” (para 157) “The Defendants have raised several grounds for challenging the validity of the suit patent IN'893” (para 151) under clauses (e), (f), (h), (i), (j) and (k) of section 64(1), and “vide order dated 5th July, 2023, four issues have been formulated by the Court for adjudication.” (para 149)

The Court held that “none of the prior art documents relied upon by the Defendants, in the opinion of the Court, anticipate the invention disclosed in the suit patent” (para 182), that “the challenge under Section 64(1)(f) of the Act miserably fails” (para 216), and that “the Defendants have failed to discharge the burden of proving invalidity of the suit patent” (para 265). It held that “the Plaintiff has sufficiently proved infringement of its suit patent” (para 291), that “a reasonable measure would be the damages calculated on the basis of licence fee or royalty rates” (para 322) and that “the appropriate royalty rate would be 20% of the price of the antenna” (para 337), so that “the Defendants are liable to pay to the Plaintiff a sum of ₹152,32,36,783.90/- towards damages.” (para 344) “The suit is decreed in the in terms of paragraphs 354 and 355.” (para 362)

What the court decided

1. Burden of proof on validity. “The burden of proving the invalidity of the suit patent is on the Defendants.” (para 152) The Court concluded that “the Defendants have failed to discharge the burden of proving invalidity of the suit patent. Accordingly, the first issue is decided in favour of the Plaintiff and the suit patent IN'893” (“Indian Patent No.240893”) “is held to be valid.” (paras 152, 265)
2. The test of anticipation. “for the purposes of determining novelty, prior art documents cannot be ‘mosaiced’ or read in combination with one another, each document must be considered individually and assessed on its own terms. It is also highlighted that a generic disclosure in prior art does not, by itself, defeat the novelty of a specific and limited disclosure.” (para 154) “it is settled law that to satisfy the claim of anticipation the whole of the subject invention should be there in the prior art. The anticipation must be such as to describe or be an infringement of the claim attacked.” (paras 154, 181)
3. Known asymmetry and the novelty claimed. “Asymmetric beam patterns were known in the field but the novelty of the suit patent was to create a split sector antenna with a plurality of sub-sector coverage areas, one of which was asymmetrical in a manner so as to ensure that the total critical coverage area is not compromised.” (para 170) Of Gabriel, “the disclosure of the suit patent and Gabriel are not just different degrees of the same concept, but they are conceptually distinct forms of asymmetry operating on entirely different planes of reference” (para 172), and “a reading of Gabriel in its entirety reveals that it teaches away from the inventive approach of IN'893.” “Thus, in the opinion of the Court Gabriel does not anticipate the suit patent.” (paras 170, 172, 175)
4. The patentee’s own pre-priority article. Of “the TenXc Article which is a news article in respect of the launch of M/s. TenXc’s PCS bi-sector array” (para 178), the Court held that “while the prior art article does state that the array can be used for replacement of existing 65° sector antennas, it says nothing about how the replacement is to be effected, what beam patterns are used, or how the coverage area of the replaced antenna is preserved” (para 179) and that “by itself, the TenXc Article would not satisfy the threshold required for anticipation of the subject invention.” (paras 178–180)
5. Expert evidence on inventive step. “The reliance upon the pleadings, in this cryptic manner that too by an expert who is expected to give evidence on lack of inventive step, would be wholly unacceptable” (para 200). “It was imperative for the Defendants to have adduced detailed expert evidence in this regard.” (paras 200, 202)
6. Linking multiple prior art documents. “whenever multiple documents are relied upon for the purpose of arguing lack of inventive step, the said documents ought to be inter-linked or connected in some manner.” (para 204) “For any invention to be obvious, the following steps have to be shown:” “What is in the prior art which relates to the invention?” “What is the common teaching known to a person skilled in the art?” “How does such a person make the JUMP from the prior art to the subject invention?” (para 210) “When there are multiple prior art references or documents, relied upon in order to establish obviousness, it is necessary for one document to be linked to another.” (para 211) “But the underlying rule is that there has to be a link.” (paras 204, 210–212)
7. The Dartboard model. “the Defendants have engaged in a textbook exercise of impermissible hindsight bias, while aiming to prove lack of inventive step in the suit patent.” (para 208) “In this Model, at the centre of the Dartboard is the subject invention which is being challenged and each of the prior arts are the Darts being slung at the invention in question.” “The Dartboard approach of Defendants in patent litigation ought to be dealt with imposition of heavy costs.” (paras 208–209)
8. Obiter. Prior art and Large Language Models. “In the era of increased use of AI tools and Large Language Models (LLMs) it would be extremely easy for persons challenging patents or the grant thereof to cite several unrelated prior arts, raising the objection of lack of inventive step.” “Deeper scrutiny would be required to examine if there exists sufficient motivation for a person skilled in the art to combine such documents or references” (para 213)
9. Inventive step: the finding. “There is no evidence led on record to show as to how these documents make the patented invention obvious to the person skilled in the art. There is no connectivity established between the cited documents.” (para 214) “a person skilled in the art, lacking the blueprint of the suit patent, would not find the transition to these steps obvious.” “Hence, the challenge under Section 64(1)(f) of the Act miserably fails.” (paras 214, 216)
10. Undefined terms in the claims. “On the aspect of insufficiency, the term ‘critical coverage area’ is clearly understandable from a reading of the suit patent.” “The said term is not to be defined with mathematical precision but is to be broadly understood in the context of the invention. Similarly the expression ‘substantially equivalent’ also merely means that the replacement would continue to maintain the effective coverage area of the earlier antenna.” (para 230)
11. Foreign prosecution and foreign decisions. “the claims of corresponding patents in foreign jurisdictions would not automatically have a bearing on construing the claims of the Indian patent.” (para 236) “Accordingly, the claims of the suit patent have to be constructed in view of the complete specification and reliance on the prosecution history before foreign jurisdictions, would not on its own, be sufficient to satisfy the ground of insufficiency under Indian law.” (paras 236, 238)
12. Illustrative embodiments and the best method. “The weightings, as in any other complete specification, are illustrative in nature.” (para 251) “No patent can be expected to contain all the permutations and combinations. In fact, Section 10 of the Act requires the best method to be disclosed, which obviously must be the best method known to the patentee at the time of filing of the patent specification.” “Until and unless, the Defendants prove that the result achieved at points (1) to (7) at pages 18 & 19 of the specification was either a mirage or mere imagination, the argument of insufficiency completely fails.” (paras 251, 262)
13. Inconsistent grounds and the mental act. “while, on the one hand, the Defendants argue that the subject invention is a natural phenomenon, on the other hand, it is argued that the same is a scheme or a mental act. Such grounds cannot co-exist with one another” (para 241). “Replacement of an antenna in order to change the beam patterns to reduce the overlapping areas cannot, by any stretch of imagination, be termed as a scheme or a rule or a mental act.” (paras 241, 253)
14. Proof without the product. “By comparing MATLAB simulated beam patterns with the Defendants admitted beam patterns in their product brochures, the Plaintiff discharges the initial onus in respect of infringement.” (para 285) “Under such circumstances, the only possible way to prove infringement is by comparing the suit patent with the Defendants’ product brochures.” (para 286) “The Defendants having withheld their best evidence, the Plaintiff has produced its best evidence i.e., the patent and the Defendants’ brochures, which are admitted documents.” (paras 285–286, 290)
15. What the claims cover. “The Plaintiff’s patent does not intend to cover all asymmetrical antennas but only those in which asymmetry is achieved by maintaining the same critical coverage area but reducing the handover zones.” (para 288) “The basic elements between the two antennas being identical, the only question that is to be seen is whether the critical coverage area is being maintained while using one asymmetrical sub-sector coverage area.” (paras 288–289)
16. The Butler Matrix defence. “The Defendants’ have set up a Gillette defence by claiming that Butler Matrix model was used to design their antenna.” “Thus, the defence of Butler Matrix is not made out.” (para 285) “the only conclusion that the Court can arrive at is that the Plaintiff has sufficiently proved infringement of its suit patent.” (paras 285, 291)
17. The measure of damages. “under Section 108 of the Act, the reliefs that can be granted in a suit for infringement are either damages or accounts of profits, at the option of the Plaintiff.” (para 296) “in this case loss of profits cannot be awarded on the basis of sales of the Defendants. What would be a reasonable measure would either be the price erosion of the Plaintiff or royalties which the Defendant would have been required to pay if they had licenced the Plaintiff’s technology.” (para 319) “the infringement of the suit patent cannot be the sole blameworthy factor for reduction in the Plaintiff’s antenna’s price.” (para 320) “a reasonable measure would be the damages calculated on the basis of licence fee or royalty rates.” (paras 296, 319–322)
18. The royalty rate. “A party that launches products into a market without verifiable due diligence in respect of subsisting patents cannot subsequently seek to mitigate its liability on the basis of such an unsupported premise.” (para 330) “the Defendants ought not to be put in the same position as of a licensee, who has bonafidely negotiated a license, but ought to be directed to pay the higher percentage as royalty on sales.” (para 336) “the appropriate royalty rate would be 20% of the price of the antenna” (paras 330, 336–337)
19. Actual costs. “the conduct of the Defendants has been far from bonafide.” (para 352) “Under these circumstances, the Plaintiff is entitled to complete actual costs in this matter.” (paras 352–353)
20. Disposition. “Accordingly, this issue is decided in favour of the Plaintiff, and the counterclaim of the Defendants is dismissed.” “A decree of permanent injunction is granted restraining the Defendants, their manufacturers, dealers, retailers, subsidiaries, and associate companies from selling, offering for sale or promoting any antenna which infringe the Plaintiff’s suit patent” (para 354); “the Defendants are liable to pay to the Plaintiff a sum of ₹152,32,36,783.90/- towards damages” (para 344); “the Registry of this Court is directed to issue a certificate of validity is granted in respect of IN240893 in terms of Section 113 of the Act.” (paras 344, 354–355)

Subsequent treatment

No later judicial treatment and no further appeal traced as of 17 October 2026.